I have a few questions. (Note I cannot use Macros as a solution, I know that
would be easier but I can't)

1. Can you set a "default value" in a cell that is the first item in the
Validation List? This would mean that although the user can pick from the
list, The first item in the list automatically appears in the cell.

2. Can you replace the users selection with another from the list.
Think of this one like an OPtion Button. Lets say the user selects "X" in
the first cell. Later he selects "X" in the second cell. I need something
(Not a macro) that changes the First cells value from "X" to "".

Thanks in advance.