You need to go into the Connections module of the settings menu. Go down to the part about your work network and setup a proxy using 68.28.31.33
Don't put any user names or passwords in there. Go to your connection manager and make sure that your Vision connection is DISCONNECTED. Go back to the section in "Connections" and view your work conenctions. Manually connect to this connection (I called my connection "Calltones").
This part sounds stupid, but it worked for me...
Launch PIE and manually type this link in:
http://vision.sprintpcs.com/output/e...Paul_Wall.html
Now browse down on that page to get to the main Calltones page. bookmark that page.
That's it. You might want to disconnect from your special proxy conenction and use regular vision connection... but I've had a calltone for a couple of days now and this worked flawlessly for me