Maybe you may want to read the following article:
http://wireless.java.sun.com/midp/articles/palm Towards the end there is a section called "Advanced
Java Applications" which explains how to set up the network and stuff...
Basically, there are 2 things you need to do:
1. Redirect Netlib calls to host TCP/IP. To do this, right click on POSE window, select Setting -> Properties, and check the Redirect NetLib calls to host TCP/IP
2. Enable Networking. To do this, tap the Java HQ icon, then tap Preferences and select Networking Enabled