CD-Key, How can I find it?

[Risiko]

I have bought both original half life and condition zero. I want to reformat my computer very soon, and I'm wondering where I can find those cd-keys that are inputted. I don't think I have them written down anywhere so...how can I locate them from Steam?

 

[JimmehH]

The CD-Keys are linked to your Steam account. All you have to do is log in to Steam with your current username and password after you reformat and you'll be able to play the games.

You'll have to download the files (GCFs) again unless you back them up on to something.

 

[FragBait0]

Of course your ****ed if you want to use it on a WON install. I could suggest a few ways to get an old-school install going but they would ban me for it

 

[Gunner]

I have bought both original half life and condition zero. I want to reformat my computer very soon, and I'm wondering where I can find those cd-keys that are inputted. I don't think I have them written down anywhere so...how can I locate them from Steam?

Well if you bought the boxed versions, look inside the boxes on the back of the manuals. If you have the steam versions, do what Jimmeh said and log in with your account.