Windows 7?, go to the start menu, type device manager. you should then see a list of all things your computer detect from core components down to the USB devices. Ok now your gonna do like so http://img21.imageshack.us/img21/2811/usb2.jpg
1.Check for hardware changes (Which windows 7 auto installs latest driver unless a timeout occurs)
2.You may find the Camera under "Other devices"
3.You may find the camera in Universal serial bus

steps 2 and 3, click it then find your Camera and click that (Double click till another window comes up). Then click driver and then update driver. Search online for driver. if your search your computer, it may not find any driver otherwise windows would have most likely installed it already