As tRio starts up, there should be some "binding RMI" messages near the top of the output. What do these read? If they're saying 64.xxx, then you can override this via the host-name in the <rmi> element in trio.xml:

<rmi create-registry="true" host-name="192.168.0.1"/>

The other way around this problem is to sign the applets. This will stop the security exception you're getting when you use the 192.168 address. If you'd like I can send you signed versions of the latest stuff - but be warning, it's not fully tested yet.

Cheers
Paul