Finally, after a couple days of trials and tribulations, Slack(64) 13.37 is up on VBox, and what a trip it was for this neophyte, LOL. As I've been warned, it was a big learning curve for sure! I installed KDE but the DT would not come up, it would fault about halfway in the loading process with stuff I could not understand so we went with XFCE and I must say it's not too bad. Even running in VB, Slack is pretty darn responsive, a special thanks to Grogan for his many articles about Slack, much appreciated.
The only thing I've done so far is to get flash and audio working so I've a long way to go including some updates.