Sorry, toothless2, but I'd say you're out of luck. Pure Pinball uses hardware-accelerated 3D graphics to generate the table in real-time, and if it needs a 3D card with hardware T&L, it's not likely that you'll be able to get around that.
I would suggest that you check out the Pro Pinball series, but the versions here at GOG run within the DOS Box emulator, and I suspect that if your video card is too old for Pure Pinball, then you likely also don't have a CPU fast enough for DOS Box to run the Pro Pinball games well.
If you're technically savvy enough, you should see if you can find a DOS demo of Pro Pinball: Timeshock and install it on your machine using the latest version of DOS Box, and see how that works out. You'll be extremely hard-pressed to find a better pinball simulation than Timeshock, so if it happens to run smoothly then I wouldn't spend much more time worrying about Pure Pinball.
As it eventuated, only Timeshock was released here as a DOS game. GOG's versions of Big Race USA and Fantastic Journey are both Windows-native, and so should run beautifully.
FWIW, Timeshock is my favourite, followed by Fantastic Journey, and lastly Big Race USA.
Post edited May 17, 2009 by Shadowcat