If you've done everything that we suggested in this other thread of yours, I'm not sure how much more help we can be. Something isn't right, whether its a simple mistake in the apn settings or a problem with your account, I couldn't tell you. http://www.blackberryforums.com/gene...pera-mini.html
I have TMobile, 8100, .107 and Opera all working fine. I wish I had more suggestions.