Serious Macro Menu Help

I have been frustrasted for a month or so trying to create an Excel Menu
macro.
1. Macro opens a popup menu with a list of terms for expenses. By scrolling
down, I need each term when selected to refer to a submenu with terms.
2. Once name is selected the macro inputs the text in a cell, moves over one
cell to input the kind of expense, then moves over to next cell to allow
input by the user of the amount.
3. After User entering Amount the macro moves back (left) 2 cells and
down 1 row. Ready for next expense.
PS If this is asking too much then A. Where do I find how to create a popup
menu with terms? B. How do I stop a macro and allow user input?
Thanks in Advance