I think I may owe you a big thanks. I too bought the CV643D from SH and installed it in my A2000 running OS3.9. After installing the Cybergraphics 3 disks, the whole system cratered and now gurus during bootup. I have the Cybergraphics 4 CD, but obviously the guru stops me installing it. I've been on a business trip for 2 weeks and should be home in another 2. I'll download those original install disks and give them a try.
Cheers,
