I use Excel and Word 2003. My new computer -- new about six months
ago -- came with MS Office 2007 pre-installed and I activated it.
However, I never use the 2007 tools -- Word, Excel, etc. -- I find
them too confusing and the 2003 versions work for me.

A friend sent me a database in xlsx format, or something like that.
When I clicked on OPEN, it opened in Excel 2007.

However, I can't find an Excel 2007 icon anywhere on my computer.

I tried Start-All programs and looked in every folder -- no Excel
2007 icon.

Used Windows Explorer and went to c:\Program Files -- nothing found.

I can't open the database in Excel 2003.

When I go to Windows Explorer and navigate to the folder where I have
this database stored and double-click on it, it opens in Excel 2007 --
so the application has to be somewhere, but, WHERE???

Thanks.