Okie Dokie, I have the same card and installing drove me NUTS! However, digging and digging through promise's website, I finally found the solution, YAY!
1. Install RC2 or above from a dos prompt.
2. After the first 'rebooting now' plop in a dos disk
3. from the dos prompt, edit txtsetup.sif
4. remove all instances of the text 'ultra66' (no quotes)
5. reboot
6. when you *first* see 2000 booting whack the f6 key a bunch of times to force it to let you install scsi drivers(it doesn't tell you this is possible at the point you need to do it)
7. use the latestest drivers from promise on a floppy and tada it works =)
