Box2D User data for shapes?

Brucey - I am trying to get the lastest SVN version from

http://maxmods.googlecode.com/svn/trunk/box2d.mod/

I am using Tortoise SVN - I haven't done it before. Anyway it says I need a user name and a password (when I use the above URL) . How do I get these - Do i have to register somewhere?

Thanks