Recently I have been getting into collecting Valve retail disc releases. Obviously, I can’t run the original HL2 2004 5 disc CD release because of CD Key and old Steam. I know this is possible as it has been done but no one has really shared the knowledge. Yes, I am aware there is one made by BitRain available for download but I am only interested in running it from my disc. If anybody here has this knowledge I would really appreciate it if it was shared. P.S: If anybody knows how to crack the CS:S DVD (1 disc) that came with DoD:S and HL2:DM please comment too.