Here's what i am trying to accomplish with joomla. I have setup a joomla website on www.domain.com, but i want other co -workers to have their name as a subdomain for example " www.maria.domain.com and each co-worker would have the same content, the same template except for the contacts page. Can i accomplish that with your plugin?

YES we already have customers that use JMS to create different website
totally identical except a contact.
Do do that, they have used a special contact page that display the
information relative to the specific JMS "multisite ID".
It is possible to have a special "custom" module that would display a
content that is depending on the contact info.
This customer had used the standard "contact" component where it has save all
the contact info and just display the contact correspond to a special alias.
In fact he has used the alias as the JMS site ID to retreive the info and
display the appropriate contact info.

So YES, this is possible and require a little development - but this is
possible.