Gamepad Issue! Need Urgent Help!

I brought a gamepad of eBay and its good n all but I didn't get any drivers with it, the gamepad does work when I switch it on, but I can't use the full function of the device.

I don't know the name or make of the gamepad but I know that it's a dual analogue wireless gamepad with a rumble feature and that’s about it- in windows game controllers in the control panel says that I have got a "USB JOYSTICK" and the status is "OK"- but it won't tell me which driver or the name/make of the gamepad is.

I need some info to help me find out which make/model/driver is of my gamepad- some tips or links to the net to software that would detect which gamepad I got and will let me know which drivers I would need to use the full functions of my gamepad.

Thanks
Simon