Google Says:
site:arduino.cc arduino standalone
Links I've found useful:
http://www.arduino.cc/playground/Learning/AtmegaStandalone
http://www.imagearts.ryerson.ca/sdaniels/physcomp/tutorials/Arduino_standalone/ard_hack.html
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1234192721
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1239733868
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1240701133
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1239733868