Mutt - 2010-05-06

I have a trouble with snoopy.
I have to log in into a website a.k.a
The problem is ( I think ) that the action of the form is: index.php.
When i'm logging in, in'm redirected in my own website instead of the correct one.
For example i need to reach this page :
but i'm stuck in this one :

Do you have any idea ?