June 24, 2008 -- 

On page 11, I mention Giga Designs, manufacturers of CPU upgrade cards for Macs. The company has apparently gone out of business, and the URL I included no longer works. Therefore, I would not recommend trying to install Leopard on a Mac that uses a Giga Designs processor upgrade, as you may have trouble getting it to work initially and will be unable to get any support in the future.

—Joe Kissell