USB printers disappearing

[josh hough]

I have one OS X 10.2.5 machine with two USB printers attached (an Epson and 
a Brother), and one day both printers spontaneously disappeared from the 
Print Center.  I downloaded and reinstalled their respective drivers, 
restarted, and the printers are back.  However, for the Brother, the 
"Configure" button is grayed out.  Prior to the disappearance I had an 
array of configuration options available.  Now nothing.  Any ideas?  Thanks 
very much.
-josh