I got Steam. I got CZ.

See title.

I was going to find a thread for you on the steampowered.com forums, but the site isn't wokring for me. My advice therefore is to go to those forums when they are available, there is bound to be a thread there about it.

• Do I get to keep Counter-Strike: Source after the beta period has ended?
  No.
  
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Looking for any imformation that may help at the moment.

well you can keep it....move the gfc file and just play it offline, steam will never know, in anycase did you regiser cz on steam? you may have to register the "CD key".

I believe you have to register CZ.

[Elaborating on Omegas Post]
Basically, right click on steam goto browse games, then at the bottom hit "Register A Product I Already Own"

I'd imagine that would allow you to play source.