1.
http://tortoisesvn.net/downloads
2. Install the version of that program for your os's architecture( 32bit, 64bit ).
3. Create a new folder someplace, leave it empty.
4. Right click the folder, select svn checkout.
5. Enter
http://svn.runuo.com/repos/runuo/devel/ as the url when prompted for the repo url.
6. Click ok. Watch as it downloads.
7. Enjoy.
Steps should be accurate, i may have be lax in a spot but it should get you the lastest svn.
[Edit]Periodically to ensure you are up-to-date, right click the folder, select svn update. If theres a change, youll get it.[/Edit]