I am interested in being a client of DH. Anyone know if you can install Mono (Asp.Net for linux) on a VPS (virtual private server)?
Yep. Not officially supported, but internal testing has suggested that it will work. You will probably need to set the memory up from the minimum of 300 MB, though, as Mono (like Java) is rather memory-hungry.
You may have a problem doing that. Dreamhost PSes run Debian 4.0, which is out of date. DH still backports security updates. But you will likely have dependency issues when installing mono.