Can't Format Cells...CAN format whole sheet
 

I converted a Corel Quattro Pro document into an Excel document and now I
can't see to format any of the cells individually...the only formatting I
seem to be allowed to do is if I want to change the format of the ENTIRE
SHEET!!! Does anyone know how I can fix this!? I have looked EVERYWHERE in
the options, the page setups, everywhere I can think of to turn off whatever
it is that is causing this block...just can't find it! Please help!