I have been using Flowol 4 to control my 9751/9701s for some time. I have just spotted this as a result of trying to figure out Robolab 2.9 which I just acquired.
This Control Lab download works fine on my XP box with a Startech (Prolific) adapter, Null Modem cable and a gender bender adapter.
Great to finally see the real software for this stuff.
Now to try get that Interface A running.