>In Word automation, I do a bunch of changes and save the document. Everthing is ok. The VFP starts Word, opens a document, applies changes to it, saves the document and closes Word. However, if I add a PrintOut(0) just before closing Word, this will force a save and a prompt will appear to ask me if I want to save my changes or not. How can I avoid that?

I think you have wrong first parameter. It should be logical:

llPrintBackGround = .f.            && parm 1
lnPrintRangeType  = wdPrintFromTo  && parm 3
lcOutPutFileName  = ""             && parm 4
lcFrom            = "1"            && parm 5
lcTo              = "1"            && parm 6
lnCopies          = "1"            && parm 8
lcPageRange       = ""             && parm 9  if parm 3 is wdPrintRangeOfPages
llPrintToFile     = .f.            && parm 11 only if lcOutPugFileName is used

oWord.oDocument.PrintOut(llPrintBackGround, , lnPrintRangeType, , lcFrom, lcTo, , lnCopies)