RAwn: just one warning that you should have.
If you have contracted for GPRS, your PPC will try to connect to GPRS before trying to use WiFi. So make sure you've disconnected the GPRS and connected the WiFi BEFORE turning on your browser...
this is so bad that when connected to your PC, if you try to use your web browser on the PPC, it says it's impossible to connect because it can't activate the GPRS... :-/
Good luck!