This has probably been asked before, but I’m giving it a shot anyway.
Yesterday I bought Garry’s Mod on Steam because of the sale. I haven’t started playing it yet, but I will get to it. There’s just one small thing on my mind: I don’t actually have any Half Life game except for Deathmatch, nor do I own The Orange Box, just Team Fortress 2. A friend of mine has a copy of The Orange Box, however (a physical copy, not a digital) and I’m wondering… if I were to install The Orange Box on my PC via his Steam Account or using his CDs, would I get access to all the props in The Orange Box in my copy of Garry’s Mod?