When I try to use stat tracking on Guitar Hero III I get an error that says "Server Not Available/Cannot connect to server"

Chances are, you're not doing anything wrong, Peter. This most likely an issue either with their servers (which might be overloaded with all the new users flooding their system) or with the connectivity on your box. Activision recommends restarting the game and trying again. If that doesn't do it, give it awhile and see if the server responds later, as traffic can be volatile. Not exactly smooth, but that's the Internet for you.

Thanks, Amy. I restarted and it worked!

Rock!