8922 Classifieds Modifications

Need a few adjustments to my Classifieds site, I want the following: 1) an option to use a coupon code as a form of payment, with the ability to add/edit/remove coupons from within the /siteadmin area. I would like to have unlimited coupon codes in use at one time. 2) The abillity to see which coupon codes have been used and how many times, from within the /siteadmin area. 3) From within the /siteadmin area I want to be able to search users based on any of the fields that exist. For example... show a list of people based on City or State or any other field that I want to search... another example would be by First Name, Last Name in order to administer their account. 4)The uploading of images is currently broken and needs fixing [login to view URL] More Notes: This is a credit based system. You buy credits in advance of placing an add and use them to place adds (things for sale). I dont want to turn off the existing payment options ( I will need them later), I just want to add the coupon code feature (to the payment drop down list and have box where they can enter the coupon code they have recieved, either when they first sign up or later on down the road) and have users enter it and use it to add credits to their accounts.