I had the devil of a time getting a Belkin USB Network Hub (Model F5L009) to work.  Symptoms included:

I've been burned a few times by the Microsoft Loopback Adapter (MLA).  It's a nice idea to have a loopback adapter, but it appears to me that when a program asks Windows for an adapter (pick an adapter, any adapter) Windows either provides the loopback adapter as the default, or when a program asks for a list of adapters, the MLA is the first adapter in the list.

So what? There is lots of software out there that once it finds a connected adapter, it stops looking for better adapters.  Yeah, I know that isn't the fault of the MLA,  but here's the effect:

This works better than the method by headtailgrep at http://www.pdastreet.com/forums/showthread.php?s=&threadid=47229 because Blackberry Desktop will auto-uninstall headtailgrep's installs, but not Blackberry Desktop's installs.  htg's method works for generic Java applications, while this method works for Blackberry applications.

This method is useful if you don't have a Blackberry data plan.

Prerequisites:

• Make sure IMAP is enabled in your GMail account settings (on mail.google.com)
• New Email Account Wizzard
• New Account Setup: Select "Email account" -- NOT "Gmail"
• Identity: Enter your firstname and lastname, plus youremail@yourdomain.com
• Server Information:
• Server type = IMAP
• Incoming server: imap.gmail.com
• Outgoing server: smtp.gmail.com
• User Names