Os Commerce fixing

Hello, I am looking for someone affordable and professional to help me with an oscommerce project. The store was running perfectly... up until an error appeard, tried to get it fixed by hosting provider. They did a restore of a back up and it wiped out the design. Now its showing the following error message: Warning: session_start(): open(SESSION_WRITE_DIRECTORY/sess_01bb0672015306f95b06e0828d5d02d7, O_RDWR) failed: No such file or directory (2) in /home/beautysa/public_html/catalog/includes/functions/[login to view URL] on line 67 Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/beautysa/public_html/catalog/includes/functions/[login to view URL]) in /home/beautysa/public_html/catalog/includes/functions/[login to view URL] on line 67 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/beautysa/public_html/catalog/includes/functions/[login to view URL]) in /home/beautysa/public_html/catalog/includes/functions/[login to view URL] on line 67 It also wiped out all the design. Now its showing the Os commerce template with my data, but no design and error messages. I have a backup of the store as it was before, which brings me to the project. I need someone who can help me re-install the store and bring it back to the way I had it. This includes: -installing and configuring it with the existing database -making sure all products are back up -making sure the design is the way it was before (*and just generally making sure everything is back to normal.* -Also, recommend if I should intall "Cre loaded os commerce" or keep the Os commerce version I have now. I need someone fast and affordable. This is a very small project that shouldn't take a professional very long to complete. If you have experience in Oscommerce please bid on this project. Thanks for your time.