e-box on existing jaunty

[bino]

Dear All ...

I move this question from "general" to this sub forum.

I use ubuntu for some years, but never touch SAMBA things.

Now I want to start trying to install ebox.
I've some question about it :
1. Is it true that the LDAP is included in ebox-samba ?
2. Since it'll be installed on existing jaunty :
a. Will it destroy my existing apache2 and pgsql ?
b. for LDAP : what will happend with my existing linux user ? will it change on how my server authenthicate the users ?

3. database backend : Will it use existing pgsql ? or will it use another (i.e MySQL) ?

Kindly please give me your enlightment

Sincerely
-bino-