I was wondering if anyone has created a app that will change the computer name (I know there are scripts) but what I am thinking of is a GUI interface that will prompt them for the computer name and give them a drop down list.

example:

<School><Worstation or Laptop><Instructional or Teacher><Room Number><ComputerNumber>

so it would prefil the computer name like this: 000E-LI-0010003

I know it can be done but it just hard for me to think of a good way.

I don't have an app handy for you but it strikes me that you can accomplish your goal using AutoIt. I use AutoIt in my school environment to script and automate all sorts of mundane tasks with great success. It's a great tool in your arsenal and worth getting to know.