everybody! I really need some help with a case: I have

Hi everybody!

I really need some help with a case:

I have today one WP blog (standalone,not a multiuser installation) that is live on a .com adress.
But my customer want me to clone that blog so I need to change it to a multi site. (no problem) But here I need some help:
- I need to keep the main site on the same address xxx.com and working as today.
- The mainsite should also then be cloned (i need a template of that ) into subfolders.

When done that my problem is that you can't clone the "main site"..??

What is the best way to go?

Kind regards/ Lars