PPl I HAVE THE SOLUTION FOR THE WIRELESS XBOX#^) problem:
1 go to start, left corner at the bottom of ur screen, click it
2 goto systemmanagement
3 then to computermanagement
4 then devicemanagement
5 there should be an option with the name "XBOX 360 preripherals
6 click on the little + at the start of previous mentioned at 5
7 doubleclick the option "Xbox 360 receiver for Windows
8 a window opens with the properties of the device, the last one being the option to "use this device (switch on)" (or something simular, i gotta translate from Dutch XP so be a bit flexible in ur interpretations of the names i use)
OR the other option (oh btw u gotta click this box 1st b4 u see BOTH options)
this option is "do NOT use this device (or switch off)
9 confirm the shutting down of the device and then switch it on again with the same bar as descr in 8, and in my case they found eachotter rightaway, gonna test now if it works in calibration window, brb, it works like a charm, now gonna test it in gta iv, i lrt u know if that works too in a min, works perfectly
final, so first install drivers then restart pc then do the above described things and im pretty sure it WILL work, ofcourse u still might need the "windows/xbox360 dual platform controler.
have fun ppl.