From the developer: "Change your Half-Life CD-key easily. This small program allows you to manage multiple half-life and counter-strike cd keys. Convenient when you have been banned from a certain server or want your statistics under a different player name. This new version allows you to comment each key, so you don't lose track of which is which."
Full Specifications
What's new in version 3.0
General
ReleaseNovember 8, 2008
Date AddedSeptember 8, 2002
Version3.0
Operating Systems
Operating SystemsWindows 95, Windows 2000, Windows 98, Windows Me, Windows, Windows XP, Windows NT
Additional RequirementsWindows 95/98/Me/NT/2000/XP, Half-Life or Counter-Strike