Changing the login background!
A great tip submitted by Nessuno: Changing the login background! In Leopard, even if you change the default space theme background, you will still see this default background when you log in. The reason for that is that with multiple accounts, each account probably has a different background, so the OS keeps the default background as the login background. If you are the only one using your computer, you might want to customize that however. It is possible to do so by fooling the OS into thinking that it is the default background. Here is how:
1. Make a copy of the background you want and rename it to "DefaultDesktop.jpg".
2. Go to /System/Library/CoreServices and find the file DefaultDesktop.jpg.
3. Store the file somewhere on your hard drive in case you want to go back to the original default background.
4. Place your new background called "DefaultDesktop.jpg" in the folder /System/Library/CoreServices.
Thanks for the tip Nessuno!