Compatibility
Microsoft Excel 2007 offers many rich, creative features.
However, many of these options are not supported in earlier versions of
Excel. For example, Excel 2000 cannot "see" the Icon Set
formatting because the Icon programming simply isn't there in the old
Excel software. Previous versions of Excel used Lists, which Excel 2007
doesn't use. That capability is now available as Tables.
You may get a Compatibility message when you save your
Excel 2007 work. You can also check the compatibility with the
Office menu.
Try It: Check Compatibility
Go to Office ->Prepare.
Select Compatibility Checker.
What Do You See? The summary will indicate which
new features are not compatible with older versions of Excel. If you want
to keep the old functions, you can Copy to a New Sheet, then
Continue.