I have actually already done that.

It was trivial, I should not have posed that as a question, my bad.
What I really want to do was make mail.smallserve.net managed by the SME server, but each time I do that, the main virtual host (the Primary ibay) is used when one types in mail.smallserve.net. I want it to point to the GroupOffice html folder.
As I have said before, I have managed to do this by creating a VirtualHost (through templates of course) and removing mail.smallserve.net from the server-manager and instead relying on hosts files.
Its a work around for now, but it'll do.
If what I am asking is not clear enough, that's fine, it is kind of a hard situation to explain.

Thanks,
Craig