Hi, all. I have Excel 2008 as part of the new MS Office suite. I am learning Excel in order to be more competitive in the job market (basic admin stuff: spreadsheets, scheduling, etc). Since '08 is so new, it's unlikely that any place that I work for will have it. So, do I need to learn, say 2007 for Windows? In other words, is Excel 2008 much different from Excel 2007 OR Excel 2004? I don't want to waste my time learning software that nobody has yet. Thanks.