On my Vista/IE9/Java6 I don't get the applet coming up. Any advice?
Have you checked that Java is ticked in your Internet Options? I have XP and IE8 (I think... I use FireFox so I don't keep track of what IE is doing). Anyway, I can't imagine the layout is too different. Go into Tools-->Internet Options and choose the last tab 'Advanced'. Java is about half way down the list and should be checked to use whatever version you currently have on your system (mine is JRE 1.6.0_26).