Excel Spreadsheet Database migration of 2 fields.

The unique identifier in old spreadsheet is column A (ID). The Unique identifier in the Products Spreadsheet is column B (ID). I need somone to take Column U from "Product" spreadsheet, which is called description, and take the information from Old Spreadsheet (Column D Size) and insert the "size" into column U. In layman's terms: I need you to import the sizes (Column D) from the old spreadsheet and insert them into the new spreadsheet in the field called "Description, Column U). IMPORTANT NOTES: You must make sure that the Unique Identifiers match from both tables..in other words, the sizes much match the products EXACTLY in both tables. I will NOT pay anyone until I see that this has been done correctly. I can give a lot of extra work if this is done properly. This then must be saved as a [login to view URL] file.