run this code from vfp and point to your exe.it point you the associated application able to run your exe.
otherwise must set in explorer your association.
in principe if vfp installed on system, it can open your exe file in all cases !
this code makes only a confirmation

Declare Integer FindExecutable In Shell32.Dll ;
	string lpFile, ;
	string lpDirectory, ;
	string @lpResult

lcResult = Space(100)
lcFile = Getfile()     &&or put here your executable
If Empty(lcFile)
	retun
Endi

lcPath = Justpath(lcFile)      
lnSuccess = FindExecutable(lcFile,lcPath,@lcResult)
If lnSuccess <= 32
	Messagebox("Cannot find the associated program")  &&then create association(explorer, rightclick,open with...(always)
Else
	Messagebox("Associated program is "+lcResult)
Endif