I have an Aiptek DV 4500 all-in-one camcorder. My computer won’t recognize the webcam or camera?
I have used the drivers from the disk and downloaded from the website. I have checked the cable to make sure it was connected and working properly. I am running Windows XP Home SP2. I am at a loss as to what to do next.

contact the retailer
try uninstalling the drivers and plugging in the camera. it should sho w up as removable disk under my computer (i think, because i have an aiptek camera as well. it sucks. im not a big fan of aiptek myself ) then install mega dv manager(if they even use that anymore), and if you see video from your camera, then you should be fine. then when your using a program that uses a webcam, click select webcam, and then you should be able to find it something mega dv under a list of installed cameras. at least this was how it worked on my computer, using an aiptek pocketdv cam with same os as you and sp2. hope this helps!
install its driver again n its software if in its box