Radeon 9200 series cards will have drivers for OS3xx supplied shortly.
Good news as it's getting harder to source Voodoo PCI graphics cards and existing ones are getting on a bit now.
No mention of drivers for OS4, although it maybe possible to use 3.9 drivers under emulation in the same way it is for Voodoo cards.
http://www.elbox.com/news_08_03_15.html