Help with Borderlands GOTY

[Plasmus]

I installed it on steam, it gives me the serial keys, but where do I put them?

[Ad Bot]

[Littledude]

If the game asks for them use them, otherwise just leave them be.

[obi1999]

For the 2 DLC that need the code to be entered the loading screen wont finish. After which you have to Alt Tab to enter the code in a window that opened.