Darius,
Thanks so much for your response.
Your article is one of those I researched while bird-dogging the sound issue in DOS. So far I am using just the GUI to configure guest hosts - and the DOS guest gui did not offer ALSA drivers as an option. I had to run down OSS emulation packages in Ubuntu to even define a /dev/dsp there. But you've given me more things to try - thanks for that.
For now I will be focusing on the 3d graphics issue - didn't see that one coming since the guest installs seemed to be going well up to that point.
One step at a time . . .
Best regards,
Bob