creloaded 6.15 mod, add how did you hear about us to create_account page

Im designing a site for a client using creloaded 6.15 my client requires a drop down box on the create account page so the customer can choose from a list of options (pre determined in admin)on how they found the site. (while siging up for an account) I have seen a contrabution on the oscommerce site that does this but would need modifying for creloaded 6.15 Due to time constraints I dont have the time to do this myself this is a small mod so please no overbidding. Money will be paid via escrow after I check the mod working on the demo site.