How about just changing if you select the cell. No clicking necessary.
Right click sheet tabview codeinsert this. As written works on only column
A.

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
If Target.Column < 1 Then Exit Sub
If UCase(Target) = "X" Then
Target = ""
Else
Target = "X"
End If
End Sub


--
Don Guillett
SalesAid Software

"Wandering Mage" wrote in message
...
Is there a way for me to write a macro to have certain
cells toggle between X and "" every time they are
clicked? Does this need to be done on the "Module" level
if it is possible? I have never been able to find how I
write macros there. Help appreciated! :)