CruiseControl

http://cruisecontrol.sourceforge.net/
http://cruisecontrolrb.thoughtworks.com/
http://confluence.public.thoughtworks.org/display/CCNET/Welcome+to+CruiseControl.NET

Mit NUnit:http://confluence.public.thoughtworks.org/display/CCNET/NUnit+Task

Others Text:
http://www.martinfowler.com/articles/continuousIntegration.html