You may be interested in the Release Notes showing database compatability with old RDM versions.

http://docs.raima.com/rdme/8_1/Content/GS/RelNotes.htm?SearchType=Stem&Highlight=Compatibility|compatible|compatibility

I came across the following page in my own search for a method of extacting RDM 3.3 data. My conversion need is not critical enough to pay for (its more...

Just thinking laterally as a stop-gap measure. Perhaps you can use VMWare to run Windows 95 as a guest OS, so you can continue to run the old...