Some people got the browser enabled on Verizon 7750, but not everyone. Try these steps:
1. Install BlackBerryOS 4: http://www.blackberryforums.com/viewtopic.php?t=1995
(Warning: This may slow a 7750 down somewhat, unless you free up a fair bit of memory)
2. Go to your BWC website, select "Profiles" and select "Send Internet Browsing Service Book"
Do so at your own risk...