>Something like this

oFSO = CREATEOBJECT("Scripting.FileSystemObject")
>* lcfolder is the fully qualified
>* directory name
>oFolder = oFSO.GetFolder(lcfolder)
>FOR EACH oFile IN oFolder.Files
>  oFile.Name = FORCEEXT(JUSTSTEM(oFile.Name) + TTOC(oFile.DateLastModified), JUSTEXT(oFile.Name))
>NEXT

if I understand correctly.

Would that approach would from a VB script file that we would be able to execute from DOS? The reason I am asking this is because I want to avoid to install the VFP run time.