Reddit reviews Headset Buddy Female 3.5mm Headphone to Male PC Adapter - Single to Dual 3.5 mm Headset Cable (PH35-PC35)

You need a 2.5 to 3.5 headset adapter...and maybe a mic/headphone splitter...or a cable that does both.

Edit:

Atomic Market 2.5 Female to 3.5 Male Audio Adapter Stero or Mono Gold Plated
http://amzn.com/B00AVQ7HJ0

Headset Buddy Adapter: Smartphone Headset to PC Adapter - Use a 3.5mm iPhone/Smartphone Headset With Your PC, Converts 3.5mm Plug to Dual Mic/Audio 3.5mm, for Skype/VOIP (01-PH35-PC35)
http://amzn.com/B00332DPDG

http://www.amazon.com/Headset-Buddy-Adapter-Smartphone-Converts/dp/B00332DPDG/ref=sr_1_6?ie=UTF8&qid=1318352232&sr=8-6

~~You could probably use something like this with one of these and one of these. I just grabbed the first search results so better prices could be found easily.
edit* you'd also need to find a female to female 3.5mm connector as well.... you might be better off finding a jack and having someone solder the connections. (this plus this and this)~~

or you could just get one of these

Man, did your description make my head hurt...

Then it clicked in my head. It sounds like you just need one of these.
https://www.amazon.com/Headset-Buddy-Headphone-Adapter-PH35-PC35/dp/B00332DPDG

Headset Buddy Adapter, assuming you mean a laptop that's not a Mac.

You'll need one of these. Smartphone Headset to PC Adapter

These headphone devices that are used on cell phones won't work the way you expect them to on PCs. You will have to get an adapter like THIS

Yeah, you'll need one of these

TRS and TRRS phono connectors: Wikipedia

Adapter: Amazon

PC's use separate 3.5mm plugs for mic IN and headphones/audio out.

So you need this:

http://smile.amazon.com/Headset-Buddy-Adapter-Smartphone-01-PH35-PC35/dp/B00332DPDG/ref=smi_www_rcolv2_go_smi?_encoding=UTF8&*Version*=1&*entries*=0

just make sure whatever you get supports CTIA 3.5mm jacks.

BTW I think some PCs (like macs) have a dual in/out plug.

I checked the Plantronics page, but they didn't give much in the hardware specs of the headset. You said you plugged them into your phone and they work fine. So first off you're using a "Tip-ring-ring-sleeve" style headphone jack. This style of headphone jack only became massively popular since smart phones started really taking off about six years ago . Because of that most computers don't have single jacks that can recognize both mic and headset from a single plug. It is becoming more common on laptops and some desktops though, but where I work even most of our newer business class Dell Laptops we purchase still don't support that kind of connection. We have a few people who have smartphone headsets that want to use them on their Dells for Skype and such so we ended up ordering a bunch of adapters that breaks out the mic and headphones into two plugs that is compatible with all computers that have a headphone and microphone jack. An amazon link for said product is below...

Amazon smart phone headset adapter for PC's.
http://www.amazon.com/gp/product/B00332DPDG

Here's a weird tip that works as well... buy a $5-$10 USB Bluetooth Dongle for your computer, then plug your new headset into your smartphone and connect your smartphone to your PC via bluetooth. Then use your headset over bluetooth with it plugged into your phone that acts as the receiver. I've done this a few times with my iPhone, it's also nice because I can toss my phone in my pocket and walk away from my desk while still talking although the connection gets horrible if you're more than 20-30 feet away or if you get a wall between you and the receiver.

Anyways hope that helps, or at least pushes you in the right direction to find the answers you need.

Definitely works. Unless you headphone jack has it built in, you will need one of these if you want to use the mic.

As described, your PC has one audio input (microphone) and one OUTput (speaker). A mic/earphone headset with only one connector will not function in the configuration. You'll have to use an adapter to split the signals. Ex. https://www.amazon.com/gp/aw/d/B00332DPDG/ref=mp_s_a_1_1?ie=UTF8&qid=1499400297&sr=8-1-spons&pi=AC_SX200_SY289_QL65&keywords=headset+to+pc+adapter&psc=1

Made an edit to the main post, I plan on using After FX mostly, and vegas secondarily.

The headphone/mic splitter is from amazon I'm sure someone could find one just around at a small computer store, but this is my backup if I can't find it locally.

PCs generally don't support phone-style combo jacks (audio output + microphone). You need this type of adapter.

http://www.amazon.com/Headset-Buddy-Smartphone-Adapter-01-PH35-PC35/dp/B00332DPDG/ref=sr_1_2?ie=UTF8&qid=1452988785&sr=8-2&keywords=smartphone+pc+headset+adapter

found it

If your setup is what I am thinking it is, you need one of these adapters https://www.amazon.com/Headset-Buddy-Headphone-Adapter-PH35-PC35/dp/B00332DPDG

You need an adapter https://www.amazon.com/Headset-Buddy-Headphone-Adapter-PH35-PC35/dp/B00332DPDG

Something like this, or this cheaper version?

There's always the good old Koss PortaPro. Which are still likely the best on ears below 100€. Maybe a bit too light if you want to add the Modmic, however you can also get the version with an iPhone mic and something like this:

https://www.amazon.com/Headset-Buddy-Headphone-Adapter-PH35-PC35/dp/B00332DPDG

They aren't super durable (probably as durable as the Logitech) but they do have a lifetime warranty, and they are fairly cheap as well.

only phones and some computers like macs have a combo jack.

for most computers you need to split the mic signal out

http://www.amazon.com/Headset-Buddy-Adapter-Smartphone-01-PH35-PC35/dp/B00332DPDG/

There aren't any solid solutions that will be both device agnostic and inexpensive, unfortunately. If you end up sticking with the X360, my favorite has been the XBox 360 Wireless Headset. Alternatively I had an extra set of Plantronics M Series earloop and eartips that I stuck onto the 'set and I find them to be much more comfortable / better at remaining in place. In all, with the optional kit, can run you from $25-$40 (sometimes you'll find a dirt cheap sale on the communicators somewhere, especially for like the MW3 edition). Personally I wouldn't go any higher in cost for an X360 solution, unless you go full-blown with an Astro Mixamp Pro and a favorite, high quality headset (expect to spend anywhere from $200-$500 altogether, or higher if you go really nuts).

A solid, dollar for dollar, PC / PS4 solution would be to get the SteelSeries v2 paired with an adapter like this ($60-$80 solution, depending). The DS4 has a 3.5mm jack that will support in-game sound as well as chat. The downside to it is it's a little underpowered. A lot of people don't have issues with it, but I'm rather picky. Thankfully the SteelSeries v2 only has a 32 Ohm impedance and an accompanying low-ish sensitivity level. So they don't take much to drive, but still -- to me the sounds for anything on the DS4 are a little muddy. To forego it, you would need to spend a little more money. Next step up, which works great for the PS4, would be the Sony Wireless Gold for around $80, but while it's a great solution for the PS4 I find it subpar on the PC. To get better sound out of the PS4 you would have to go the Astro Mixamp Pro route.

For PS4 you could also go the opposite direction in pricing and get the $12 PS Vita Earbuds and just shove those in the DS4 jack. While still an inline mic (will be picking up a lot of ambient noise) these are far better than what you can get out of the packaged earbud / mic with the PS4. If your soundcard doesn't support mic input via the headphone jack and only has the separate 3.5mm, can always use another adapter that goes in the reverse. Or just simply save up for a different headset for PC.

You might need a splitter like this http://amazon.co.uk/dp/B00332DPDG if your laptop doesn't have a mic/headphone combination plug.

There should be a splitter available, that would probably be the easiest and cheapest way.

Edit: Something like this http://www.amazon.com/Headset-Buddy-Adapter-Smartphone-Converts/dp/B00332DPDG/ref=sr_1_1?s=electronics&ie=UTF8&qid=1312063061&sr=1-1

What splitter are you using? Something like this? Try that, if it doesn't work, you may just have to get a better headset, or preferably separate headphones and a mic. Splitters like the one I linked will split a 4-contact 3.5mm plug into separate 2-contact(mono) 3.5mm mic and 3-contact (stereo) 3.5mm headphones plugs. The problem is, some headsets designed for phones add extra features such as volume controls and call-control buttons. These send wonky-ass signals down one of the 2 circuits (mic or headphones), and if that's the case, you just won't have much luck with either the cans or mic with those headsets on a PC.

It sounds like you may have a splitter like I've linked, so I think you're just SOL. Get better equipment.

https://www.amazon.com/Headset-Buddy-Headphone-Adapter-PH35-PC35/dp/B00332DPDG

I actually don't know if this would work (it's something I've thought about before but never tried), but what about getting something like this which would let you plug your headphones into both your PC/console and your iPod at the same time.

Like I said, I dunno if it'd work, so I wouldn't try it unless you can borrow it off someone to test it out first.