I need a better video card for the AMD64 machine

[Dave Phillips <dlphillips@xxxxxxxxxx>]

Greetings;

I'm happy as a clam in mud with my new machine, but it's developed a 
problem. I purchased an inexpensive nVidia-based card that's starting to 
behave poorly. I think the hardware itself is buggy, the display will 
sometimes shudder rapidly side-to-side, blurring the screen view. 
Sometimes it stops and stays stopped, other times it goes on until I 
have to reboot. The problem doesn't appear to be a heating problem, but 
I've decided to go for a much better card anyway.

So, I want an nVidia-based card with 256 MB video RAM and a decent 
cooling fan, preferably under $200. Any recommendations ?

Best,

dp