I think it is ridiculous that a DH tech emails me back that they don't support the Multi-site stuff... really dont understand mirroring... It took me hours of understanding and fiddling to make this work - no thanks to DH
Here goes multi-site set up using mirroring... on shared server
Read this light version description:
You will need this plugin also:
and this walkthrough:
Where WP Multisite uses real domains not folders to generate (clone) the new site. On shared server (can't use wildcard)
[*] You set up a domain from a client say on Go-daddy, they point to NS1.dreamhost or whatever the domain is on DH.
[*] You create a subdomain on Dreamhost and the domain your client is pointing to DH servers.
[*] You make sure the subdomain is using the ROOT of the multisite domain instead of its own natural folder for information when setting it up in DH panel
[*] You mirror the new domain to the subdomain
[*] You use the Wordpress Domain Manager plugin to set up the sites on WP
[*] You fiddle with it for about 3 hours... just kdding, wait until the dns propogates... flush your dns and all the directions on the link I listed at the top