Data Feed Import scripts

I am using a feed that a supplier has provided to load products into my oscommerce cart. i need a script that will load the prodcuts into there correct category. i need a second script that will take the thumbnails and preview images off the supliers feed and use them in the oscommerce cart. i need to be able to change pricing based on category and brand from wholesale price to MSRP and i need the prodcuts to update via cron job once a hour and the images to update once a day. I need this completed by thursday afternoon 12/3/09.