Old thread, but here we go...
OpenVBX is dirt-simple to install on your own.
1) Create a MySQL Database.
2) Unpack the most recent .tar.gz into a folder in your DH space.
3) Visit that folder with your browser.
So really, you don't need to use what DH provides for this one. If you want to install OpenVBX and exchange notes here, I'll be happy to help.