Help VBA code - Create a table based on user input
 

I'm using Excel 2010 and I am trying to do the following:

- User is required to check at least one of the two checkboxes A or B.
- If B is selected, I want another line to pop-up asking the user to enter a number (X)
- Dependent on X provided above, I want Excel to create a table with X rows

Having trouble with the VBA code. Any ideas anyone?