Like the topic says:
I have a Sapphire ATI X1800XT. Tried a couple of guides on insanely mac forum but with no luck:

http://forum.insanelymac.com/index.php?showtopic=19806 (this is, I think, Tiger-related)
http://forum.insanelymac.com/index.php?showtopic=69345

Anyone got this card fully working in Leopard?

Thanks.