oscommerce needs custom text boxes added to order form

We need customization made to oscommerce for our customer. They offer custom imprinted items. We have a 2 part project: PART 1------------------ We need several fields added to the order form to appear on the sales invoice. OUR PREFERRED METHOD: Create a unique database to hold the information on same server as the products database. Reasoning, it will be easier to upgrade if we don't tinker with the main database. ACCEPTABLE METHOD: Add fields to existing database of products from fields on order form. IF NOTHING BETTER IS AVAILABLE: We will create a formmail form and substitute it for the final order acknowledgment page. This we will do ourselves if another, better option is not available. There are 33 text fields, 1 multi line text box and 23 checkboxes. Fields should print on invoices for client and vendor. You can add the boxes to the existing item order page ([login to view URL]) or create another step in the process. Your option. ----------------------- PART 2----------------- -Add a text line for Option drop down box 1 which allows uploading of a file to the server, and -Add a multiline text box to Option #2 drop down box which can add to either product database or the customizations database described above. I can provide a working copy of the exact site for your use and give access to it for your testing. This will allow for errors without taking the live site down. I have a target of 7 day completion, however additional time is available if needed. There is a script on the oscommerce site that allows for custom fields to be added to the order form, however I could not make it work. Questions are welcomed....thanks!