Paul,
I can't imagine RDSS won't run on Windows 8, but I will be near first in line to pick up a new Microsoft Surface tablet with Win 8 when they're on sale in October.
I tried to set up an environment on one of my computers to run VMPlayer to run the Windows 8 Beta as a virtual operating system, but ran into a few snags (and 6 hours of wasted time). If I can get some time in the next few weeks, I'll try again, otherwise ... Win 8 is the future of Microsoft OS's and will enable us all to run RDSS on convenient, low power tablets at the track, or at the beach! (And run Flash video, live race streams and replays - booo iPad
)
best,
Ted