Aucting Site Editing

I need someone to work on my auction site to edit the proxy bidding capability of the site. Proxy bidding exists normally when one item is for sale. However, when more than one item is for sale, the auction becomes a dutch auction. I want the site to function like a normal proxy auction when more than one item is for sale. I want to delete the dutch auction action of the site. Currently,when a user posts more than one item for sale, buyers can bid on a lesser amount of the total quantity of items for sale. Also, currently in the "dutch" auction, the first bidder bids a minimum amount instead of a maximum(proxy) amount. After the first bidder, the system works like a normal auction with the bidders bidding their maximum amount via a proxy bidding system. I want the site to function like a normal proxy single item auction, even when more than one item is for auction. For example, when 10,000 items are up for auction, all the bidders bid according to a proxy auction system. They each bid to their maximum bid and the site bids via proxy for them. Also, I do not want the bidder to be able to bid for a lesser quantity than the total items available. (A bidder can not select a quantity less than 10,000 on the above example). Every time a bidder bids I want them to bid for the entire amount of items on auction. Currently, the system allows partial amounts to be sold to different buyers via the "dutch" auction function. I do not want that to be possible. HTML, JS, and Perl are probably all of the languages used in the site. A plus would be to have some working experience with an auction site. A actually think this work maybe a simple job for someone who is proficient with HTML, JS, and Perl. The code is already in the .pm files for the proxy system. I just don't know how to edit the files to suite my needs. Please feel free to ask me any questions.