i have a iphone 2g and am thinking of getting a 3g one. I recently met up with a friend with a 3g and was able to have a look around a 3g iphone. one thing i seen is that iphone 3g did not have a menu for changing the Access Point name to access 3G data and EDGE data. is this the case with all iphone 3gs? Is it possible to change it by jailbreaking and sshing to the iphone? is there a file where the accesspoint is stored and can be changed?

i would appriciate any info