Upgraded my graphics card today to something that will hold me 'til I build a new PC. GT430 128bit 1gb from a 7300GS 64bit 256mb. Night and day of course.
Trine 2 1080p FXAA + 2xSSAA
Portal 2 1080p 4x/4x
New Vegas 1080p 4x/2x
Not bad for an old Dell and a budget card.
By the way, the draw distance in New Vegas on PC vs console... holy crap.
I'm all about sharing the road with other drivers - as long as they use the part that's behind me.