Is HL2 Voucher Registration Needed for CS:S Preload?

[BigNamek]

I'm just wondering do I need to register my HL2 voucher key inorder to preload Counter-Strike:Source?

BigNamek...

 

[czrsink]

Yes. Unless you have CS:CZ, of course.

 

[BigNamek]

Alrighty, thank you very much, sir.

BigNamek...