DAT file properties

Someone or something has changed the properties of my DAT files on the computer to "open with"..notepad.

Will this be a problem? & if so how can i change it back?

  hugh-265156 03:25 30 Sep 03

click here

click here

could be anything.if you know what its supposed to open with,right click it and select open with/choose program and select from the list or browse to find.

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