I'm one of the number of people suffering from font problems (http://www.adom.de/forums/showthread.php?t=11281) on WinXP. The problem is clearly on our side and not on JADE's, but it's enough to kill a great portion of enjoyment (at least for me).
How about adding a sub-menu where the user can choose the default font JADE uses to draw the environment? Or a variable in some cfg file (like ADOM uses). I don't know how much people out there share mine and Pustka's problem, maybe none, but I hope such basic customization functionality can be useful for someone besides us.