It is good to have GUI of the "Logging" setting in Admin console of JBoss 5.1 so that the JBoss Administrator can be easier to config/manage the logging for the server or web application. A further step is to view the specific log inside Admin Console whenever it needs to trace/debug the error issue.
I just wonder why this feature still is not in the recent version of JBoss AS 5.1.
Despite this forum's name, it is not for Embedded Jopr, which is the admin console provided with AS 5.1.0. This forum is actually for an admin console that never saw the light of day - I know because I worked on it.
Anyway, you should ask questions about Embedded Jopr at http://www.jboss.org/index.html?module=bb&op=viewforum&f=294