Ben "Virtual PC Guy" Armstrong's recent post sent me back to my early days at Microsoft. Back then (early 1990s) I was a member of the MS-DOS product support team. His link to the Microsoft Knowledge Base article was one I remember fondly. Many times I walked customers through these instructions over the phone. Customers with fax machines could also call our fax-back service and request a hard copy of the article - it wasn't quite internet easy, but it was pretty close :)
Just for fun, here's another of my old favorites (Requesting MS-DOS Version Number with DEBUG). Give it a try the next time you are running an MS-DOS Virtual PC session.
Disclaimer(s):This posting is provided "AS IS" with no warranties, and confers no rights.