need software developer to maintain and upgrade the product

we basically deal with a e-learning product in market, now we are in to a need of upgrade our product as per our marketing plan, our product is developed into java and flash and the format is .exe now it is into, there are round 84 exe and converted into index as a setup. as customer can install a setup and operate from desktop by clicking icon present on desktop, now we need a same procedure bu after installation of product customer should have login pannel. for further details a can put you the mail which contains all snapshot and video for better undestanding. thanku\r\n\r\ninto attachment\'\r\nHi,\r\n\r\n i have sended you the installation video which is previous installation procedure through which, we were to install. But Now what i want is same procedure but after installation the product, There should be a login pannel (as in image), where customer has to put key provided by us after his payment.\r\n\r\nKey will be generated from us through his mac id, Provided by customer.\r\n\r\n\r\nbelow exe is a eg. format which is to be converted in to index.\r\n\r\n\r\nlink of exe\r\n\r\n[login to view URL]