I've installed BackTrack 5. My understanding is that the program "Armitage" comes fully functional in BT5. After starting the "mysql" service, I typed "armitage" at the console and received the following message:

Warning: Uncaught exception: java.awt.HeadlessException:
No X11 DISPLAY variable was set, but this program performed an operation which requires it. at gui.sl :217

Can someone please help in resolving this?

Thank you,