» Mon Nov 19, 2012 1:26 pm
Once you get your new computer, go to http://store.steampowered.com/ and click 'Install Steam'. Install it and create an account. Run the program and log in. Then click Games > Activate a Product on Steam...
You then enter the code that will be printed on your Skyrim Manual, and the game will be locked to that Steam account. You then click Library, then select Tools from the dropdown (It's a hidden dropdown, it will say 'Games' by default), and select the Creation Kit and say install. It should show up no matter where you purchase the game since it all wraps together in Steam.
EDIT: Also if you just put the disc in when you open the box I think it directs you through the entire thing. (Steam install, activate, and all that jazz)