Seriously, what a fucking pain in the goddamn ass!
Someone install this custom molotov skin:
http://www.fpsbanana.com/skins/55423
and tell me if you get it to work, because i can't. I make the required changes in the pak01_dir.vpk file (why should we do that anyway? Skins with the same name and in the same directory relative to the one in the VPK files should automatically overwrite the original texture, like in all the other Source games!
Ill bet your ass you can't get this skin to work ingame, it makes your pak01_dir.vpk file invalid, and L4D crashes with a cannot find console/background01.vtf error.
I don't get it.
What a piece of shit method to install custom skins! Goddamn...