That's great. My intention is also to tether in my office. Right now I am using a AT&T USB aircard that comes in at about $70+ a month. I also carry around a Palm Tungsten Calendar (non-phone), and my Razr cell. I was also planning on buying a Tom Tom or similar device for my car, as I currently am doing a lot of driving around looking for residential addresses in unfamiliar places, and I use my aircard both in my office and at various and remote residential addresses..
It seem to me that an iphone; with tethering; and access to yahoo calendar on the net; and a Tom Tom GPS App. on the iphone would very neatly combine all four of these functions in one handy dandy device, and save me a few bucks a month.
I was going to buy an iphone 3GS last week, but some wise folks on this forum advised me that the 4G is expected out in mid June, and would likely be rapidly followed by a jailbreak to enable tethering. So, I'm going to go with what I have until then.
Thanks.