Sudoku: Excel Helper

The weekend passed uneventfully except for the Sudoku puzzle I was working on. While enjoying the puzzle (How geeky can I get!), I quickly realized that I can use Excel to help me with my puzzle. I managed to create a simple excel file that would verify my Sudoku answers.
Below is the screenshot of my Excel helper:





You may download my helper from here. If you find an error, please leave a comment. Enjoy!

See also:
Sudoku Excel Helper Explained
Sudoku Trick