There is a PowerShell labcast available from
Some one who tried it reports:
"It has a few quirks – on one occasion the voice-over disappears for a few minutes. If you leave the labcast and return to it later, your VM (and your work) is gone, so best done in a single session – or do the labwork on your local machine. Exposure to other scripting tools will help – most of the concepts transfer."
Read the complete post at http://richardsiddaway.spaces.live.com/Blog/cns!43CFA46A74CF3E96!1548.entry