Have you seen the recent article comparing the up-coming Snow Leopard with some PC system? Spare yourself some confusion - - and time - - by reading Apple’s page that outlines which computers will be able to run it. http://www.apple.com/macosx/specs.html
Note: It is only for Intel Macs. Earlier Macs don’t need it and won’t run it. When you buy a new Mac now it will be Intel, and if you purchase after June 8 you can upgrade Leopard to Snow Leopard for $9.95. The rest of us will pay $29.00.
Thanks to David Passell for alerting us to the confusion of the PC article. Want to read it for yourself? http://blogs.zdnet.com/Bott/?p=1114