I got an email from the robot that a new repository was created. Looks like support created a repository on my account to troubleshoot the ticket I submitted. Now subversion works! I first tested their repository, worked great.. from the browser you just see the revision number (zero to start). Then I tried it from my SVN client and it worked nicely. The repositories I created earlier also work and new repositories that I create work too.
It's been 2 days since I created my dreamhost account. It's been just under 24 hours since I submitted the support ticket. I'm not sure if it is the 2 days or the support ticket that made it work... no reply to my support ticket (yet) and I don't see a way to reply myself to let them know it is working.
Anyway, even thought the wiki says it should be working when you can browse to the repository it may in fact be that you need to wait longer or that support may have to setup something manually.