Phaidox: I hope it's the right place to post this...
It has come to my attention that the dreaded "ATI/AMD bug" (game refusing to even start on these cards) plaguing Rogue Spear might have been fixed at long last! I have yet to test the solution, but early reports certainly do give us cause for optimism.
http://forums.ubi.com/showthread.php/735949-Rogue-Spear-Workaround-For-ATI-AMD-Owners Holy crap looking at the responses it looks like it does and with the expansions, you wont believe the effort iv tried to get with to work on amd/vista 64 will try after work, many, many thanks for the share!