How can I get Excel to select an entire row when I use the "Arrow UP" key or
the "Arrow Down" key?

For Example, if the cursor has selected Cell A3 and I "Arrow Down" to A4,
the cursor would then select the ENTIRE A4 ROW (this spreadsheet has data in
some of the A:Z columns (columns are not consistently filled for all cell
A4:Z4).

This will help the viewer see all of the A4:Z4 cells highlighted (kind of a
custom user input aid).

Many Thanks

Ross