This is my log4net config file
This may help a little, depending on how similar log4j and log4net are, I would think they are based on the same specification, but I don't know for sure.
Well I can't tell you what I have in my log4net config, but I can tell you what I have in my log4j config if that's good enough...
Also I have a corresponding chainsaw configuration file:
Also here is some information that may help you decifer the latter file: http://wiki.apache.org/logging-log4j/Configuring_a_log4j_RollingFileAppender_with_Chainsaw