minor site modification

I have a custom e-commerce site which needs additional fields added to the Add a Product section in Admin Section. The purpose of these additions is to provide new/ better page descriptions, keywords and meta information within the header of each of the product display pages on the site. These elements are currently missing or were not adequately provided by the site developer. Send message for site url / more details. IF YOU CANNOT BID WITHIN THE FIXED BUDGET - PLEASE DO NOT BID.