Hi,
If your BlackBerry is provided to you by your employer, use this version instead:
http://ip-relay.idokorro.com/IPRelayBES.jad
(This is the one that requires the BES server)
If you are having problems getting Internet stuff working on your BlackBerry, you should use the resources found at
www.BerryFAQ.com to help you through. Post your questions on the
BlackBerryForums.com forum website.
There are happy users of BlackBerry IP-Relay here:
http://www.blackberryforums.com/showthread.php?t=16029