Backend OSCommerce Programming NEEDED

Currently my website displays items 'Regular Price' and I have the ability to adjust this price. I need the items to display 'MSRP', 'Website Price', and then 'Savings' (to show the customer how much they are saving). I also need the ability to adjust these prices at will. Visit my site at [login to view URL] and let me know if you can get this done in a timely manner. I believe this is a small job, but obviously it is beyond what I can do. Let me know if you think otherwise this is a bigger job. I need communication and a realistic timeline as to when this can be completed. Thanks!