College Textbook Site enhancement

I have a college Textbook site that is OSCOMMERCE based which is currently in operation for the past 2 years, I have MYSQL database with OSCOMMERCE Front end, I need some enhancements to the site as listed below 1) JAZZ up my first page, include modifications to style sheet via fonts, colors, adding Textbook, college or student images also a new logo etc 2)Most important - Integrate Amazon, EBAY API capability on my site, in other words, provide search capability on my site, OSCOMMERCE currently only lists books that are in my database, I need a search capability that does check my stock on hand first and then goes to AMAZON & EBAY items for sale, I sell books that I have on stock, If I don't carry, i need the sale passed on to AMAZON OR EBAY for Affliate revenue. Keep in MIND students normally search based on ISBN, TITLE, AUTHOR (So I need all 3 of them). 3) FIne tune PAYPAL, GOOGLE CHECK OUT capability. 4) HELP with adding my books list that is *.csv format into MYSQL DATABASE I will list a competitor site if you need for reference. This project is pretty basic and need it done quickly, If your work is good I will use for my other website enhancements..