a applet question of web-console

[dlpower]

windows profession 2000 sp4
jdk 1.4.2
ie 6 sp1

I start jboss 3.2.1 and load web-console http://localhost:8080/web-console/. The navigation tree of applet can
display. but the jboss 4.0RC1 or 4.0.0 the ie say:"class org.jboss.console.navtree.AppletBrowser not found", and the applet can't display.

Who can help me?

[darranl]

Is Internet Explorer configured to use the JRE plug-in from Sun?

[dlpower]

Thanks for your advice, but the jboss 3.2.1 is no problem.I think is not this reason.