NL2TTL,

What pic are you using?
I use a 10K NTC thermistor, 10K fixed resistor voltage divider connected to an analog input on a 16F819. I get approximately 6 counts per degree F resolution.
I also use the hardware PWM to control 400 watts of fan motors based on temperature.
I also recommend Darrel Taylor's averaging routine. It works great!
http://www.pbpgroup.com/modules/wfse...hp?articleid=7

Mark