I had the same problem and #3 worked for me.

Bill

"Nick Hodge" wrote in message
...
Renyan

A few thinks to try (In order)

1) Go into ToolsOptions...Generalun-check 'ignore other applications'
2) Search for files called xxxxx.xlb (Where xxxxx could be 'Excelx' or
your
user name), move them out of their folders and try starting Excel (They
are
toolbar customisation files). If you are now ok then you can delete the
files as Excel will have created a new one. (They may be hidden so
insure
you check this option when searching
3) In windows, go to startrun and type excel.exe /regserver

--
HTH
Nick Hodge
Microsoft MVP - Excel
Southampton, England
HIS


"Renyan" wrote in message
...
When I double click the Excel File, I only open the Excel program, not
the
file itself. I can only open the file from Excel menu. I recently
upgraded
the Office from 2000 to XP. I would appreciate if anyone can explain
to
me.
Thanks.

Renyan
January 15, 2005