Windows: If you'd like to remap your Capslock key to another function without running AutoHotkey scripts or other third party solutions this reader suggested solution uses the Remapkey tool from the Windows Server Resource Kit to solve the problem.
Lifehacker reader Java-Princess shares her simple solution to the Capslock dilemma:
Bugged by Capslock key but don't want to install any third-party add-ons or have any little icons in the tray? Good, we're on the same page. Go to this Microsoft page and download the app the Windows Server 2003 Resource Kit Tools. One of the things in the kit is the official MS way to change any key to any other key - Remapkey.exe.
Just install, run Remapkey as an admin, then drag the desired key from the top window onto caps lock in the lower window, hit the save and exit button (retro - cute!)
It works on my Windows 7 64-bit install so it probably works on earlier versions of Windows too.
We grabbed the kit and tested Remapkey.exe on Windows 7 64-bit and 32-bit with success. Thanks for sharing Java Princess!
Windows Server 2003 Resource Kit Tools [Microsoft]