eddy, if you are using just tomcat server try setting it in logging.properties available in \conf of tomcat, if it doesnt work then try the log4j.properties..
Truly speaking, i did try the sample in that post, neither i use tomcat. Sorry mate By the time while some bartender comes in and give a thought try in both and verify once, it should be Ok, after all its just change in properties file and starting the server...
Have Fun with Java
little,little.. little by little makes a lot..