>is there anyway to make a .prg file interactive? Just a simple .PRG file, nothing fancy. What I want to do is, to ask the user to insert a number (just like cin>>variable in C) and store that number in a variable.

You should create a form with a TextBox control on it, and then you can do something like:

MyVariable = inputform.textbox1.value

And that should hold ya'. If you don't want to create the form yourself, Rick Borup and I both have files here that do this for you and the functinoality is included (finally) in VFP7.