php script alteration or creation

We own an adult content site where we sell other people's content and split the sale amount with them as a percentage. We have a custom writen brokers script on our site done in php that is similar to an afilliate script. It shows sales, comissions, percentage, and has a login for each broker where they can view their own sales. We need to be able to have more control over the admin, we need to be able to manualy delete or add sales, and also when we run a percentage sale on the site, alter payouts to reflect the sale. We also want this script installed on one other site. It may be easier to just re-write a script for the three sites we use it on, that is one thing I'd like to discuss with whoever takes on this job. We're looking for someone reliable that we can call upon to do other jobs as well from time to time, also, we have a very stong presense in the adult industry and I would be willing to refer you to other companies who need programming done. this is our content site [login to view URL] the stats are not accessible from there, but it'll give you an idea of what we do.