Run Regedit.exe from Start-Run.

Go to: HKEY_CLASSES_ROOT\.xlsx (Note the "dot" before the "x")

Make sure Default is "Excel.Sheet.12"

--
Jim
"Krista" wrote in message
...
| Hello. My problem is that I have Microsoft Office 2007, but it will not
let
| me open xlsx files. When I try to open it...my WinRAR opens like when I
open
| zipped files. It shows a _rels folder, a docProps folder, xl folder, and
XLM
| document. If anyone could help me figure this out I would appreciate it.
|
| Thanks,
| Krista