Originally Posted by Marin
Check Options -> Mobile Network -> Connection Preference. Set it to 'Wi-Fi Preferred'. Then when you are connected to WiFi the Browser should use WiFi.
But reading your thread is seems that i need to set it differently. I want wifi for data/browsing only and gprs for voice. So which i do i choose now?
You were told wrong (and link to the thread that told you this so we can stop bad information from flowing). Do exactly what jasonbrass above told you to do, set that config the Mobile Network Only; this setting is for your *voice* service (aka UMA).
The BB will use WiFi for web browsing and data on it's own - when you launch the Browser just look in the upper right corner - if it says EDGE you're on GSM, if it says WiFi well... you're on WiFi. You do not need to configure anything for this to work, it's built right into the OS.