> However, I don't know what the Trap > number is for that function, This http://linkesoft.com/xmaster/developer.html Says " ... You can find all trap numbers in the Palm OS system header CoreTraps.h". Part of the Palm OS SDK I think. XMASTER is free - maybe worth a look. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist