Man DH Cedric, what is up with your post lol... is it automated somehow? Total fail.
Anyway as to what the OP is asking, with the security features DH has put into place, I do not believe it will really be possible to do what you are wanting under shared hosting. Each domain name can only have one user in control of it. I have seen hosts that allow multiple users access to a single domain (so you can set permissions for specific sub-directories) but DH does not operate that way.
You might want to review http://wiki.dreamhost.com/One_User_Per_Domain_Policy
Apparently what you want is possible if you are a VPS or dedicated server customer.