[horde] Setting up Horde / IMP

[Nicolas CHARLOT]

Hi all,

I've installed last version of horde / imp and I'm searching doc for :
- Use an external authenticating method. An application written in PHP 
(not with Horde) manage already user credential. When user1 is 
authenticated in my app, I would him to direct show his webmail (without 
a new login).
- Change theme (I've found a few elements for that thing) + adding ads 
banner on login screen and on top of webmail
- Disable a lot of thing for end-user

Thanks for your help, and excuse me for the mistakes (I'm french  ;-) 

Nicolas