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Hi Everyone,

There is a lot around the web on this subject, but I have recently pulled a lot together and written clear example code. You can see the updated page on the http://ArduinoInfo.Info WIKI here:
http://arduino-info.wikispaces.com/Brick-Temperature-DS18B20

I have a utility sketch that you can use to get the internal serial number (Device Address) on DS18B20's that you have.  Then you can use those addresses in the code for multiple temperature sensors on one wire. This is important so you can know "which sensor is which" in a bus environment. You can see that info here:
http://arduino-info.wikispaces.com/Brick-Temperature-DS18B20#mult

I will have an example running in a day or two which displays and graphs inside and outside temperatures on KSduino.org