I don't really know if this is what you're looking for, but take a loot at
ME4SE a J2ME emulator that runs on J2SE.
This apparently allows you to emulate a J2ME application as a J2SE applet or application.
A
demo can be found here.
I don't know if you can "take off" the phone skin.
[ October 31, 2006: Message edited by: Eduardo Marques ]