right,there is a thread on this which is http://forum.esforces.com/showthread.php?t=58675
if u dont know what cd key he means,he means the cd key on the back of your half life.i hope i helped.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.