Thanks, but I had already looked at the nvidia forums
I may try older versions of the driver though.
Finally it appears the problem is not as bad as I thought; After using nvclock to increase the GPU's frequency a little bit (since I've read it could go up to 200MHz) UT2004 runs a little bit better... And it seems that the values reported by GlxGears, which made me post my concerns in the first place, are not reliable.
But I still have doubts about that memory problem... I didn't buy that machine - and that card - it was given to me. It comes from a company that recently changed their hardware. What makes me think it's a 64MB card is that there is a sticky on it that says it's a "WinFast GeForce2 MX64"... Is it possible that it would REALLY have 32MB?
I've checked and that card was sold with 64MB, no doubt... So how could it be reported as having 32MB (even Nvclock says so)?
Anyway, supposing there is actually 64MB then it's a driver-related problem and has nothing to do with Vector itself...
Thanks for your help guys.