I have the IPhone, 3gs. I am wondering if I have my sim card cut to fit, can I use my current ATT contract to use the IPad for wifi and 3G? I am grandfathered in at the $30 a month, unlimited data plan and would like to use it with an IPad.

Yes you can cut the old card and use it fine on the iPad. There are a couple of cutters you can order online if you do not have a steady hand. It's called NOOSY Micro Sim Cutter and it's of course made in China.

Thanks ITom--I'm gonna try it out--I will take my card to a place that charges a nominal fee for cutting--they also unlocked my I'Phone so I could use it oversees this summer and it worked great.