AS some of you may already know, I'm a senior and do not get out much. I find I'm developing an interest in watching TV online, I have a couple of very good sources but I'm wondering if my viewing experience would benefit from a better video card. Right now I have a G5 powermac dual 1.8 with 6GB and the original GeForce FX 5200 card. I'm thinking of upgrading to a ATI X800 XT, but only if it would improve my viewing experience. I'm not into anything else that I would need this card for, but that being said, I also like to tinker with my systems and make them all they can be. Opinions please?