Quote: "As for the SVN thing, i don't think that would be the right method to go about file sharing. The risk of overwriting someone's files is too great. I have a server computer, so I think I could set up a site (with a little bit of help), and just give people passwords, and allow them to upload or download files."
I think I mentioned that, however you might want to look into Turtoise HG or GIT, both are similar to SVN but are more reliable yet also a tad more complicated. I think however that one of them, if not both support merging versions, or at least prompt you that your edited revision is a different base one then the one on the server if it has been changed. I might be wrong though.
I've done quite a few things in this region myself, although most people think of me as a complete boon that doesn't show much of skill I have my good points, although in the wrong direction(Legal issues, apparently Blizzard didn't like me much

) I have been programming Private Servers for several games for a year or two, and have even reprogrammed entire 2D (M?)MORPG engines to my own likings along with a few other people that joined in halfway through. So I completely understand the issues of File Management, however no matter how secure or well monitored you make it, there's always a slight chance that something goes wrong.

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