7600 Hard Format

Hi, I'm currently using the nokia 7600 that I bought from 3 AU and has no operator lock and whatsoever. I can use the phone in my 2G network (I can get the signal to make a phone), but I can't connect the GPRS (I've enable it and make the correct settings).

FYI, I could not access the "network mode" from the "settings" menu and I do not have a DCT-4 cable to follow chris rafferty's guide. I read from somewhere in this forum about the hard format. Could I use this technique to reset the whole settings and re-enable the "network mode" in the "settings" menu? Or is there any other solution so that I can access the GPRS?

Thanks alot. Big Thanks for all your helps. I've tried to ask for somehelp, but still no luck. And I'm still in love with my 7600 :)

cheers,
Frans