Need Auction Script Mods

Attached are the 3 files I need mods done for... 1. I noticed the auction script charges 2 cents to place an auction. I would like it to be absolutly FREE for basic auctions & only charge for the extras. I also noticed that after you list one item, you can't list another item untill you pay your account. Can you please modify this to allow people to run their account up in debit or list as many auction as they wish for 30 days before they are required to pay the outstanding amount due, if any. 2. Everytime you try to do anything like bid, sell, add to watchlist or go to your account it asks you to log in, is it possible to have a feature that allows you to sign in just once & remember your pass word untill you log out. 3. Is it possible to upgrade the picture uploading feature in the listing page to allow people to upload larger sized images and even multiple images, say 4 to 6 images up to 500 x 500 pixel area?