Does anybody know whether this app would work with just GPRS? Basically I live in an area with no EDGE or 3G reception but get by fine on GPRS for mails and very basic surfing. In fact I've had my original iPhone since November and have only seen the 2G icon appear once. It's fun to pretend I am still using a 56k modem but I'd like to use this with my Macbook sometimes if I could.