I built a new computer in May .. Athlon 1700, 512mb DDR, GeF4 Ti4400 .... So what little I edge you out with the vid card you definitely make up for with the CPU. CBFD will run very nicely on your machine, as will any other game for PJ64 that's actually compatible. I don't know how "The World is Not Enough" came up, but while it will "play," the audio is horribly distorted. I didn't play far enough to see if there were other problems ... I'm hoping by the time I ever get around to trying it that the bugs are worked out.
Get ready to buy another hard drive, particularly if you have broadband. I have a 60gb Maxtor that's almost full just since May, and I'm on a dialup modem! A lot of space is taken up by PSX iso's I made of my own PSX games, though. (I'd never try d'loading a psx game on dialup). Make sure you give epsxe a try on that monster, too!