I don't know anything about video cards and such, so i figured i would ask on here. I have a dell desktop, and some things make it slow. for example, if i am watching a video on youtube, it wont let me change tabs while the movie is playing. i have to pause it. Some ads on myspace wont let me scroll. sometimes it will let me. just little stuff like that. and if a page has a lot of flashy ads, it wont let me scroll. occasionally photoshop is slow due to graphics and such. is this a video card problem?