Thank you , keepITcool.
I changed the first 2 byte of a.ddd from D0 CF to 0D FC with a binary editor
as a test.
Then Excel.exe no more starts.
Can I as one more question?
Could you tell me the URL in which the meaning of the first 8 bytes of biff8
is decribed?
"keepITcool" wrote in message
.com...
it first looks in the registry to see if it has a defined application
for that extension. if not it looks at the first 8 bytes in the file
and recognizes it as biff8. (excel97-2003)
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keepITcool
| www.XLsupport.com | keepITcool chello nl | amsterdam
Zoo wrote in
I'm using Excel2002 on Windows2000.
I had a book whose name is a.xls.
And I changed its name to a.ddd in order not to start Excel.exe by
double clicking the file.
But double-clicking the file, Excel.exe starts.
How does Windows recognize the file as Excel's data file?