منتدى استراحات زايد

Hi,
can anyone help?
I have a VB forum (with a VB advanced frontpage on it); I changed a module on the frontpage, and then because I wanted a photo as part of it, I uploaded to photo to my hosting. However, suddenly on doing this, now I cant access the forum, I just get an error message!

I cant even log into the admin.

Subsequently I have deleted the photo via my hosting incase it was too large and throwing out the forum because of the size of the image...but I still cant access my VB admin and control the forum..
I get automatically generated emails telling me :
Database error in vBulletin : mysql_connect() [function.mysql-connect]: Access denied for user 'petdoctorforum_c'@'localhost' (using password: YES)/var/www/domains/petdoctorforum.com/docs/includes/class_core.php on line 311 MySQL Error : Error Number : Request Date : Monday, May 10th 2010 @ 02:03:54 PMError Date : Monday, May 10th 2010 @ 02:03:54 PMScript : http://www.petdoctorforum.com/Referrer : http://www.petdoctorforum.com/IP Address : 94.23.18.220Username : Classname : vB_DatabaseMySQL Version :

any suggestions what I can do!? :(