Nokia N70 web browsing problem

[phoenix]

I have just installed Opera Mini to use instead of the o2 browser but now when I have ordered a game or ringtone I get 'Packet data connection not available'. It is trying to connect via o2 web using the preinstalled browser. Anyone know how I change this as the manual is no help at all neither is the Opera website

I have also go a new 1gb card which I will start using for music etc but cannot copy everything over,like games and the office files, apparently reading other forums I need to do it via a card reader whatever that is

I hate modern technology I have wasted hours this week trying to get things sorted out why can't anything be simple like me these days.