Some VB interview questions

1. How do you represent your menu description in the status Bbr of your MDI? So that when I move the mouse over menu option, the description is shown in appropriate status bar?
2. How would you make a program which scans a bar code and perform action depending on the bar code value?
3. What is the difference between Windows programming and database programming?
4. How do you combine a number of ActiveX control, which you developed, into a single app?
5. How do you interact with the hardware level within your VB code if no APIs or documentation is supplied?