If you contact the Manufacturers Teqnical helpline, they should be able to assit you, also if you go to the website then usually the drivers are available for download.
Keep in mind that there are many different models and types of cameras out there so giving a general answer is very difficult.
However I would suggest that if your camera is MiniDV type camera then I highly recommend that you use FireWire, or IEEE1394, this is far the best way to transfer your Digital Video into your computer, I aslo suggest you get the correct video editing software. If you are just starting out then you can get ULEAD Video studio these are great for family video editing, user friendly and gets the job done. If you want to go pro then NLE (Non Linear Editors) such as Sony Vegas Video or Final Cut Pro, and Adobe Premier are the default choice.
I hope that Helps
Anhar Hussain Miah