thank you for help.
I have no log4j.properties or .xml in my whole computer.
I saw that this log4j is something that you can download from APACHE, like ant ( ant also is missing in my JBOSS distribution; is it ant something that usually comes with jboss? ). I don't know if i need it.
CLASSPATH in my win7 is set to: .;C:\Program Files\Java\jre6\lib\ext\QTJava.zip