Default fonts with Tcl and Tk

Our SAs just rebuilt all of our SunOS and Linux boxes. All the TCL tools I had developed will come up but the font is the dingbat font set. Unless I explicitly set each button, label, radiobutton, etc. with "-font = $font" (which I defint at the top to "helvetica 9"), I get the funky characters. Also, I can't figure out how to manually set the fonts for things like tk_chooseDirectory. These are coming up with the dingbat char set.

Is there a way to set the fonts one time at a system level with some sort of environmental? What can I look for that might have changed whatever it is that is causing this? I've written over a hundred scripts and I don't want to have to change the all.

Thanks for any help you can provide...

Scott E.