A few days go my friend and I just finished playing Half-Life(old retail version) with sven coop mod and I have been working on getting Half-Life 2, Episode 1 and 2 with synergy mod. I got all the GCF's needed, I extracted them, and successfully launched and ran vanilla Half-Life 2(stand alone). Having accomplished that I started to try and figure out how to add a mod. After searching for a tutorial and reading many posts that didn't do me any good I'm looking for help. Can anyone tell how to add synergy(or any mod for that matter) on stand alone Half-Life 2? I'm sorta new to this, so layman's terms would be appreciated. Thanks to anyone in advance who can help me. Also is it possible to play over LAN/Hamachi, or should I look into cracking steam?