PVCS - VERY OLD version (V5.1.1 for MSDOS by INTERSOLV )

If by any chance there is someone here who is intimately familiar with the VERY OLD version of PVCS software - V5.1.1 for MSDOS by INTERSOLV - or can recommend such a person, please drop me a line. I'm having problems with using it on Win'XP SP2 desktops. I'm aware of upgrade opprtunities but this topic is outside the scope of my question. Thank you.<br>Clarification added June 30, 2009 8:51 AM: I reopened the question since I still don't have the answer. I need this applicatio ...