I am new to Geeklog and very inexpierienced with it. I have no idea what everyone is talking about as far as the theme tester goes. For example, the source code is suppose to go where?

Also, I do now know what everyone is talking about when they mention some sort of lib-custom.php.

Can somone please help me?

lib-custom.php is one of the files that ships with Geeklog. I assume you used one of those fancy auto-installers to install Geeklog?

Log into your ftp account, find the "system" directory and the file lib-custom.php in there. Download it, edit it, upload it again.

bye, Dirk