|I Googled around a bit and found this suggestion:|
Convert the Quatro files to xls files and then open them with Calc which is part of the free OpenOffice suite:
(The site appears to be down for the moment, according to the message from Oracle, but that's not usually the case.)
Of course, you would need a copy of Excel to convert them, so that might be a minor stumbling block. ;-)
Info on converting Quatro Pro files to xls can be found here:
Click Here Before Posting Data or VBA Code ---> How To Post Data or Code.