Halflife CD Key

[Jonesdaniel]

I just wondered how i would go about finding out the current cd key i'm using.
I went out and brought a new halflife game a few months ago, so me and my bro could play on counter-strike together in the same server (i needed 2 cd keys) and the boxes are identical.
Well, now that won is shutting down soon, i need to register the cd key with steam on my bro's computer (i have it all up and running on mine) but i don't know which box is the halflife i currently have installed, and the one that is installed on my bro's computer (i have to email steam as well, since i tried to install steam on the pc straight away, but the new cd key didn't work >.> I did email steam but i got no reply, pffff)

Anyway, to cut a long story short, how do i find out the cd key i'm currently using, if there is a way ?

 

[Catman]

go to run type in regedit go to sirrea half life OR counterstrike then key and that is it