To save each Project file in AIR application separately

Hello

I'm on the verge of developing a Desktop AIR application for a particular purpose. Now this application has the facility to develop multiple projects. What I would like to do is to save each of this project in a separate file in a specified location.

And moreover when I double click this project file, the AIR application should load with the specific project. My main purpose is to port project file of user's choice from one PC to another and open the same (assuming AIR application is installed in that machine) on double clicking it.

So if a user has created 5 projects inside the application and wants to share only one of the project, he/she should be able to do that.

A application that works the same way is MarketSamurai.

I hope I have explained it clearly my requirement, kindly please provide me suggestions.

Thanks