NOTE: I've migrated my projects from Subversion to Mercurial because it allows me to better handle cases where my server is inaccessible. I'm leavin this page up in just because it has a few tips on setting up Subversion access in general. For accessing my source code specifically, see my Mercurial page.
This page should give you some pointers on how to set up a Subversion client.For *nix users, you may have Subversion installed already, but if not, you can fetch a copy from your distributor or the Subversion home site. For Windows users, you would probably be interested in TortoiseVN or AnkhSVN. A list of third-party clients is available here.