AutoText is one of the features that changed drastically in 2007.

In Word 97 through 2003, you get the AutoComplete tip box when you type your AutoText name, then you can press Enter or F3 to expand. In Word 2007, you no longer get the tip box for text entries and you can only press F3 to expand.

This was only one reason why I originally suggested you stick with one version of Word. Learning Word can be confusing enough, but you were fighting features that work differently between versions on top of that.

You're very welcome. :)