Nokia :: E52 Using GPS Abroad

I'll be visiting France in the next few weeks and wish to use the sat nav on my E52. In the uk my O2 contract gives me unlimited internet access but outside of the uk I am charged.I just want to check I've set up the phone to aviod these charges.I've gone into Positioning settings then positioning methods and dissabled assisted GPS and network based and left only integrated GPS ticked.Will this do the trick or is there something else I need to do?