No. (Unless you want to roll back to Win98SE/Win2K as well, assuming you're on Windows)
PM7 will open all PM6.5 files easily. You can change all the P65 file extensions to PMD if you like, though it's not necessary
PM is now obsolete, and work converting valuable PM files to INDD will pay off later.
Iechyd da! John
16:00 07/11/2009 GMT