poblem to install astbill

hello
I install astbill on my system debian .
before I 've the differents mistake
Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'astbilluser'@'localhost' (using password: YES) in /root/astbill/wwwroot/includes/database.mysql.inc on line 31
Access denied for user 'astbilluser'@'localhost' (using password: YES)
I changed my mysql configuration
Create the AstBill database:
./mysqladmin create astbill --user=root -p
./mysql --user=root -p astbill < /home/astbill/database/astbill.sql
./mysql --user=root -p astbill < /home/astbill/database/astbill_proc.sql
I see the differents tables of astbill when I use phpmyadmin
but now when I do 127.0.0.1/astbill , I 've
Index of /astbill
[ICO] Name Last modified Size Description
[DIR] Parent Directory -
[DIR] wwwroot/ 18-Jan-2007 10:42 -
Apache/2.2.4 (Ubuntu) PHP/5.2.3-1ubuntu6.3 Server at 127.0.0.1 Port 80
when I click on wwwroot/ I 've in my url http://127.0.0.1/astbill/?q=welcome
but I see nothing
please help me
thanks for all