Spreadsheets migrated from Excel 2000 to 2007 have hidden columns, and
I can find no way to unhide them. When the left-right visible columns
are selected, the "View" tab in the menu shows "Unhide" as disabled
(grayed out). Highlighting the entire sheet (the square in the top-
left corner) doesn't enable "Unhide" either. Has anyone heard of this,
and is there a solution?

Thanks in advance

Steve