video card problem

Hi. My computer is about 3 years old. I haven't made any significant upgrades since. It has 1.5gb of ram and an AMD Athlon 64 1.8ghz. I also have an nvidia ge force fx5200 (128mb ram I think there). Anyways, I use this mostly for video editing and it suits my needs. I have noticed some video is beginning to get kind of choppy. Not so much video on this machine, but online video in full screen. For example, I can watch video on nbc.com or cbs.com embedded in the web page and it plays out fine. When I make it full screen, it becomes choppy. I don't think it's an internet issue because I think it's the same stream, just stretched. My question is, does this sound like a video card problem? If so, what kind of card do I REALLY need to make this all work well again? I dont have PCI express. Again, I usually just use this machine for video editing and watching some of those video sites online. I don't ever game. Thanks for any help you can give me!!

Welcome to the forums Scudm,please review the rules.
As for your question i suggest you go to nvidia website and download a newer driver for your card.
Or you can upgrade to an ATI card that supports AGP (you have AGP am i right ?)
if the problem persist, probably you card also is going out

his problem isnt his graphics card its becomming choppy because your stretching the video 10x what it should be.

Thanks for the replies. I'm actually not physically stretching it myself. I click the "make full screen" button in the flash.. or flash like player and it does it for me.