If you have an existing Subversion tree on disk somewhere and you wish to move it to another machine, here's a quick 'n dirty way to do it. I'm pretty sure I read this before somewhere but couldn't find it however I decided to try it anyway. Basically, you install the same version of Subversion onto the new server, create an identically named repository ("svnadmin create foo" - assuming "foo" is the name of the new repo), replace the contents of the "foo" directory from the original machine and voila.
Of course, this is no doubt unsupported - the proper way to move a repository to another location is documented here.