Mailheader isn´t displayed

[fabrisko]

Hi,
 
On roundcube forum I saw you use roundcube with Jana. Can you help me doing this too ?
I actually have a fully fonctionnal jana mail server for my network with squirrelmail .
PHP5 intalled and fonctionnal with jana too
Mysql5 installed (only for this goal)
 I follow roundcube intallation step & I can see the login page in IE.

But when I try to log with my user : login failed !.I
What I do wrong ?

Hope you can help,
best regards.
 
Fabrisko