Windows Explorer, Tools|Folder Options|FileTypes.. Hit New extension and
associate this extension to worksheet.
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If this post helps click Yes
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Jacob Skaria


"Jason Zischke" wrote:

Hi all

I am using Excel 2007 to try and open a excel file the has a different
extension than excel's normal ones, it brings up a message box asking me
whether I want to really open this file. Is there some way to get rid of this
message?

Any answers would greatly be apprieciated.

Jason