actually the key isnt stored in a file in the Sierra folder, its in the registry...
run regedit and go to
HKEY_CURRENT_USER\Software\Valve\Half-Life\Settings\
there is a REG_SZ value called Key which is your CD key. Just edit that and it should work...
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.