My friend ("Ocelot92" is his screen name if you really must know) gave me the original Half-Life and Opposing Forces, the kind that doesn't need STEAM to run. HL works fine (save for a few bugs, but I can cope), but I don't quite understand how to run OF.
They each come in their own directories, and the Opposing Forces directory looks like this:
The original Half-Life directory has it's own folder called "reslists"...am I supposed to replace this? I'm afraid to, though, because I fear it might compromise my game saves or even screw up the entire game.
Anyone fluent in the language of Gordan Freeman that can offer me some advice?