How do I get my steam code?

I purchased multiple copies of Rust during the dutch auction to give away to my gaming community around Christmas. Well, the old website doesn’t seem to be working for me and I can’t figure out how to give out these keys. Any tips?

The email tells me to go here - http://playrust.com/user/register/

When I go to where you are telling me it only shows me the key that I used for myself. What do I do about the other keys?

[editline]25th December 2013[/editline]

Does anyone know the answer to this?