Go under your "Setup - APRS Server Setup" screen. Enable "Open the Gateway" and "Gate Objects" on the right side. Make sure nothing else on the right side is checked. Now, make Max Silence to "5". On the left side, click "APRS server log on required" and "Enable auto reconnect". Enter your Validation number, and under Extra log-on text, you may enter "filter m/300" which will filter all stations to within 300 KM of your house - ONLY use a filter if you connect to port 14580.
Before connecting to a server, uncheck all servers you have previously selected. Then press INSERT and type in the server you wish to connect to. I use "aprsfl.net:14580" and also "third.aprs.net:14580" - click them both. That way if one goes down, you can rely on the other.
If you wish, just use ONE server called "rotate.aprs.net:14580". This will rotate you through first, second, third and fourth (aprsfl) depending on the server load.
For a list of filtering parameters, go here:
http://www.aprs-is.net/javAPRSSrvr/javaprsfilter.htm
For a list of ports, go here:
http://first.aprs.net:14501/
Now that you have your APRS server set up, go to menu "Setup - Station Setup".
Enter callsign and coordinates. For your symbol, if you want to use an I-Gate symbol, scroll down and use "No’ Diam’d" and put a capital "I" in the O’ly. This will make you show up on the map as an I Gate.
Under Beacon comment, you may want to say something like "W4JCB @ Home - I-Gate".
Now under the main screen, select "Options", and at the bottom "Show I-GATE Traffic".
Go back to main menu and select "Action" menu. In the dropdown, select "Connect to APRS server", then click "yes" to log on when connected.
Now, everything you see on the "Traffic gated from RF to the Internet" will be gated to the server.