I use Tiger and I use a application that (in a combination with Remote Buddy) does exactly what you ask for.

It is called Light me! 
http://www.malcom-mac.com/blog/lightme/

It sits in system preferences and it essentially let's you configure a keyboard shortcut which will let your display go to sleep. The default is ⌘ F3.

I made an action for Remote Buddy that emulates the keystroke presses (⌘ F3) so the app will work. 
Then gave it an appropriate name and placed the action in my main Remote Buddy menu. 
I also wanted to place it under system but that doesn't work because it is a smart folder and can not be altered.

They have a Leopard version of Light Me! so I suggest you check it out. 
Works pretty well.

Ben

Last edited: 19.12.2008 09:45:01