well it all depends on what you have in your computer. I'm going to assume you have a desktop. If you are using on-board video then you'll be joining the ranks of us who are attempting to solve this over at http://www.infinitemac.com/showthread.php?p=18073 as with many other places. If you've installed a video card then its pretty obvious where to look to get this information. Help us help you.

EDIT: as for updates, I recommend Zephyroth's AMD Software Update. Great bit of software that updates your OSx86 machine (both AMD and Intel via selectable option). If you are in need of this, PM me and I'll help you acquire it or send you on to somewhere that you can get it yourself (since we aren't allowed to post links to software that alters Apple code anymore on this site).

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