Database Application / GUI

I have a prototype database application written in db4 that uses 2 GUI's, one for customers to sign in and search database for requests, one for host to manipulate and run customers requests. It will be used in a wireless ad hoc network, with the possibility of several customer sign in stations,(touch screen freindly)? uploading to host. Program will have to scan/build file dbase, etc. Dbase is of course limited? and old which will require a rewrite in vb or whatever. You can have the working DB app and code for reference, also I have a similar vb app you can work with. You must understand English very well and have a few years of development skills.? Install and registration? also needed, this will be marketed to a small degree. I've been told it can be done with 100 - 200 lines.