[logback-user] Programmmatically creating logger/appender/pattern

Has anyone got any examples on how to programmatically create a logger / appender / pattern et. al in-line in code? I can't for the life of me get this running. Currently I've got the appender (file appender in this case) creating the output files, but all I get in them is stuff like: %PARSER_ERROR_d:MODULE:%PARSER_ERROR_msg% Which looks like the pattern stuff isn't started up properly. Cheers Lance