You may want to look at Chip Pearson's utility:
http://www.cpearson.com/excel/RowLiner.htm

Fabco-User wrote:

In Ecel, can the cell-pointer highlight the entire ROW and COLUMN as it is
moved around the spreadsheet?
It currently highlights the borders, but it would be very useful on
complicated spreadsheets if the cell-pointer box projected a horizontal and
vertical highlight from the borders to the cell-pointer.

--

Dave Peterson