Good morning --

I've protected a worksheet, all except for cells in columns A:C. Typically,
the user will enter values for a row in those columns, then move down to the
next row. I can enter values fine but, when I press 'Tab' to move to the
next column, nothing happens -- the active cell doesn't move to the right.
If I deactivate the protection, the 'Tab' key works fine. I use Excel 2003.

Can someone tell me why it's behaving like this?

Thanks in advance.