I didn't think MW2 supported the PC without a fair bit of bother?
Well yes there is that, but in all seriousness i'm pretty sure MW2 on PC won't work with a controller, 360 or otherwise.
So you got it working wirelessly?Sorry, Goto auction site. Buy a Bluetooth usb adapter. several with free shipping for £1.50 Then goto this site. I used a "NANO TINY USB 2.0 BLUETOOTH ADAPTER DONGLE EDR WIRELESS" From user "xs-accessory"
http://www.motioninjoy.com/blog/show/8 Follow the instructions for either 32bit or 64bit and get the pad working using usb (very simple) then goto the bluetooth page which is also very easy follow instructions and bam your done.
Now your ps3 DS or six axis works on pc. You can then use the motioninjoy software to select xbox360 pad emulation so all your games think its a 360 pad and map buttons etc acccordingly and provide vibrate for ds3.
All cheap and easy
ps. if you have x64 vista or 7 then press f8 each boot and select run unsigned drivers or download the programme in the link to do this for you.
I'm not sure if the game supports it first party. But there are several solutions to that problem, there's software you can download that will allow you to use a gamepad in most, if not all games.
Have you any links to 3rd party downloads that might make it work , got it all connected and i cant use it at present
Got it working , bit strange having gamed with mouse and keyboard for years though but i will stick with it and tune settings here is the latest download for win 7 64 bit
http://www.megaupload.com/?d=O78N4R8N
left the keys in mw2 at default and configured the game pad to them , just a case on joystick speed now
So Xpadder worked alright for you then did it?
Official wired xbox 360 controller is your best bet.