i got the temperature sensor i bought from sparkfun a while ago working today. One site I found recommended a 2.2k resistor, but i found 8.8 worked better for me. I found this by running the demo sketch in the library(in the arduino playground), and fiddling with a potentiometer. When I got values roughly consistent with another thermometer, I measured the value of the pot’s resistance between the output and 5v(I did not connect ground, so it was not acting as a voltage divider. I then connected 7 resistors in series to match this, so a twisted pot wouldn’t corrupt my measurements. it is accurate(within a degree or two), and i hope to make it better.