The Radeon 9250 would do the trick but is a far cry from the current one.
You'll get something similar or better than the 9800SE off eBay (click here) for much less than £60. Or even from a company that sells secondhand ones, like click here: Radeon 9800 Pro AIW 128MB or Radeon 9800 Pro 128MB for £36 & £32 (excl del) respectively. G
P.S. Remember to get an AGP one (not PCI-E)