By Custom Elements, I refer to just about everything, including models, textures and sounds. I'll no doubt get a lot of headsmacks for asking this - it's a question that could apply to virtually any Valve game, I imagine, but TF2 is the only one I wish to map for - but I'll ask anyway. How do custom elements work when releasing a map? For example, I have been on servers with additional sound effects added to the game; these files wind up in the TF2 files. I have also been on a server where any class can wear a tiny party hat that I'm certain isn't Valve's work. While I am also interested in these things (importing custom hats would be cool), the main thrust of this question is whether I can simply include my own textures in a map. Granted, it will all work on Hammer and on my computer, and it would work on anyone's if I simply provided a rar with my map and all the necessary files in their correct paths, but say my friend was renting a server and was able to include my .bsp in their map rotation. Would these custom elements be installed automatically, as has been done on my computer? If not, how do you go about doing this? Is it viciously complicated? Thanks in advance.