UNIX User->Webmin User

Hi,

I recently installed the GPL Version of Virtualmin into my Webmin system running on a fairly clean Debian Etch VPS. I converted an existing UNIX account from the server to a Webmin user, but I cannot seem to add a new Virtual Host in Virtualmin to that user..it only lets me create a new user name.

I assume I'm missing something, but reading the documents and poking around the forums so far hasn't found me the answer so I thought I'd ask. It is possible to tie a Virtual Host to an existing UNIX/Webmin user correct?

Thanks!