Okay.. the FX just arrived in the mail today.. Some quick fittling and it was installed, running the latest drivers from nVidia. We jumped right into R4 without testing the card on anything else GL or DX based, and R4 hard locks the machine on loading..
One reboot later, testing a GL based screen saver from Really Slick.. Lattice runs, and quite smoothly, I might add..
Trying a fresh (non crash) reboot now.. Then R4 again..
Aaaand it crashes again.. It dies at Announceblur.r4 -_-