so far what i came up with is implementing an E-Shopping web based application where multiple users (concurrent users) are given the opportunity to select and build their own machine, make payments via visa/electron and some inventory controlling like analyzing the past data with time and inform the owner what actions should take. More like an MIS (eg:- what is the most demanding item within the past week, according to that, adjust the minimum stock limits etc..).

In my concern, i think they will focus more on the functionality than the front end.
i apologize for taking this simple, but right now i want to do something better. I respect all of ur ideas..
if there are any suggestions that i should include, post me.
thank you.
(Sorry for my bad English)

Look at oscommerce , I guess it is open source and you can download the code as well.