IspCP problem

[hxs]

Hi i installed ispcp and it works except, i create a reseller, the reseller creates a user, the user creates the domain (the domain is pointing to the correct IP)

When the user creates the domain and acces blabla.com he just gets the "login" frontend to ispcp and not his default website ?

and i want my ispcp to work like this when i go to login.blabla.comi would like to see the login site and when accesing blalba.com i want to se my normal site ? how can i do this ?

And if i want to use the webmail then i get this erro ?
Error opening ../data/default_pref
Could not create initial preference file!
../data/ should be writable by user www-data
Please contact your system administrator and report this error.