I got a free 1st gen iPhone as a prize, but it was a USA AT&T phone, so I jailbroke so I could use it with my UK carrier (Virgin).
All has been fine and I only pay extra when & if I use internet when I'm not on wifi. So I decided to upgrade to 3.0 firmware thanks to the fab instructions on this forum (THANK YOU

), but now I see a circle icon where I used to see a square or wifi.
I have read here & on Apple site that this means GPRS is on - my question is does this mean it is connected / always on - and therefore am I paying?
Sorry if this is a dumb question but I can't seem to find the answer and I don't want a fat bill at the end of the month.
M