Basic VB interview questions

1. How do you center a form?
2. Can I send keystrokes to a DOS application?
3. Convert an RGB value to a long, or a long to RGB.
4. Implement smooth scrolling for either text, graphics or controls across a form.
5. Implement some quick and easy encryption (can be something primitive).
6. 4 different types of sorts: advantages and disadvantages.
7. Compute CRC32 checksum, write a quick piece of code that accepts the packet of data and returns the CRC.
8. How do you use the Mouse OFF event?
9. How do I call Windows Help files from a VB program?
10. How do I create a textbox that lets you insert tabs?
11. How do I make text box that displays asterisks when the user types in data such as password?
12. How do I create multi-column combo box?
13. How do I make a menu popup from a CommandButton?
14. How to create menus at run time in VB?
15. Write a generic error handling routine.
16. How to copy text to the Windows clipboard and from it.
17. How can I call a Command button without clicking it?
18. Write a simple app with Encrypt and Decrypt buttons and Textbox where the user can enter text for encryption and decryption.