How to open .sfs file extension?

I have downloaded a Microsoft Excel Training 2007 and it has videos.sfs file.

How can I open this video file?

This is not a video file, it is a compressed archive. You can open it with 7-zip.

It is a OpenOffice document, open it with OpenOffice.

Get OpenOffice here: http://www.openoffice.org/download/

It's 716MB file.

Moreover its not opening with 7zip.

Ok then you can use squashfs to open it.

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