[cflsystems]

Yes it does show as a text box only, not very user friendly.... It can be made so it shows dropdown list of all partners and customer can select if they want to but it has to be custom coded, requires some php script cahnegs and of course template changes

I did this for a client once, worked ok

You don't have to have banners. You don't even have to setup commission or you can set it at 0. Not sure if they get an email with each order though - it mauy need cusotm coding as well