Not possible to just "reset" the default but there is one way of returning to
column A.
Say you start with A1 selected. Type something in A1 and hit the Tab key to go
to B1.
Type and Tab your way across to H1. When leaving H1 hit the <ENTER> key and you
will go back to A2
Rule is.........you will go back to the original column in which you started.
Gord Dibben MS Excel MVP