I'm sure the same option exists in Vista if you poke around long enough.
When you find it be sure to uncheck "uses dde" in addition to adding the %1.

--
Jim
"David Dyer" <David wrote in message
...
I would like Excel to behave like MS Word. When I double click on a Word
.doc
file it opens in its own window, separate from other Word windows. I would
like to have the same behavior with Excel files...each file opening in its
own window. I am running Vista Home Premium. When I was running XP I could
go
to Windows Explorer/tools/folder options/file types/select the xls file
extension/click properties/click advanced and add "%1". I have not yet
found a way to do this in Vista.