<p>I've deployed some Managed Beans on WebSphere 6.1 and I've managed to invoke them through a standalone client, but when I try to use the application "jconsole" distributed with the standard JDK can can't make it works.</p>

<p>Has anyone achieved to connect the jconsole with WAS 6.1?</p>

<p>IBM WebSphere 6.1 it's supossed to support JSR 160 JavaTM Management Extensions (JMX) Remote API. Furthermore, it uses the MX4J implementation (<a href="http://mx4j.sourceforge.net" rel="nofollow noreferrer">http://mx4j.sourceforge.net</a>). But I can't make it works with neither "jconsole" nor "MC4J".</p>

<p>I have the Classpath and the JAVA_HOME correctly setted, so the issue it's not there.</p>

I have successfully connected to ActiveMQ and ServiceMix using the JConsole. Does WAS 6.1 use Java Management Extension (JMX) technology? JMX is required for JConsole.
If your path is set correctly it should work fine. On windows you go to System Properties -> Advanced Tab -> Environment Variables. Have your JAVA_HOME System variable set to the path of your JDK or JRE and your Path variable with %JAVA_HOME%/bin added somewhere in there. Then all you need to do is go to Start->Run->JConsole. Select the correct Process Name and your done.
Where are you having problems at? I hope this helps.
Edit:
Here is the Java Doc's on
JConsole
.