AVR-Chat

OK. I am  new to development kits/systems.  I have my STK-500 set up 
with power (beibng stolen from a disk drive power connector in my PC) 
and the serial connection.   When I try to program in the switches and 
LED sample program, it fails, and the tip suggests checking clock 
frequency setting.  WHERE am I supposed to check that, and where do I 
set it?

tom