The GeForce 2 Pro should work with UT 2003, provided it wont be able to do any resolution higher than 1024x768 if you want to keep details up and have a respectable framerate.
Overclock the Pro, it's a Gainward so I'm thinking it should hit Ultra speeds... that'll give you a few more fps... but if you plan on playing several next gen games and be competetive online, a new board is probably in order. Anand notices how the GF4 Ti line work very well with the game.
"1024x768 is clearly the sweet spot for a number of these cards, with the GeForce4s completely dominating. It's clear that Epic has worked very closely with NVIDIA to make sure that the game is as optimized for their architecture as possible."
A Ti 4200 would do very nicely and not break the budget.
But I suggest you wait and try to get away with the GF2 Pro. The Radeon 9700 shows that it is clearly a superior solution to even a game that is "optimised" for nVidia architecture. GF4 prices are bound to fall (especially the 4400 and 4600) with the coming of the Radeon 9700 and keep in mind that nVidia's NV30 isn't too terribly far off...
Heck, UT 2003 isn't even out yet... just wait (I know it sucks)
