Its a fantastic guide, thank you! The only thing that could be useful to add is that there are some services that provide free SVN support for WAN (at least I think they would be WAN) like Google code's project hosting (
http://code.google.com/hosting/) and SourceForge (
http://sourceforge.net/). The only problem I would see with solutions like these is the requirement of your code to be open source, but for most teams, I don't see this being too big of an issue.
I actually spent a decent portion of last night, time that should have been spend studying for finals but I decided that robotics is more important, trying to setup some of this on my own. I decided to go with Google's code repository, like David. It is pretty simple to setup as long as you find the the information to connect (like the password).
I went with Google instead of a localhost solution because we have three computers that we use for programing and with my school's network running a LAN server would just be a headache.
After messing with SVN for a little bit, I am now looking into setting up batch scripts to automatically update the code on each of the laptops at startup to avoid any confusion.