For standard Java, you can use Mysaifu JVM. Here is instruction on how to install it:
http://www.cynosurex.com/Forums/Disp...ndows_Mobile_5
Even though the title says Windows Mobile 5, it works on Windows Mobile 6.
But it sounds like you want to run MDILet . . . which is an extension to standard Java. In that case, you can use the IBM MIDP Java Emulator:
http://www.cynosurex.com/Forums/Disp...Demo_in_MDILet
Hope that helps.
Chieh