well sorry, to say, but post your question here again:
http://www.nvnews.net/vbulletin/forumdisplay.php?f=14
BTW... there's something about this in nvidia's readme...
(appendix R, I think, but I don't know if it's only for one/two cards)
ftp://download.nvidia.com/XFree86/Li...629/README.txt