BleepingComputer.com: Compatibility mode in Excel

I opened an Excel Workbook today that I've had for about a year. I last opened it 2 weeks ago, but today it looked totally different.

On investigation I found that it was using Excel 2007 instead of my usual default 2003 version.

I was unable to type in any data and the menus are all greyed-out except for Open, Print & Close.

Does anyone know what's caused this and how to access my spreadsheets?

I'm using Vista Home Pemium.

Thanks, Johnaldo

This post has been edited by Johnaldo: 06 July 2011 - 07:11 PM