I tried Fox-Fi but Well, they were bought up by another wifi host product (Forget its name) and the result was not nice.
Of course I'm a T-Mobile subscriber, They do not seem to be charging me for teathering using their Hot-Spot app.
What is the differnce between a normal "router" based network and an Ad-Hock and.. This may also address your problem
An Ad-hock the computer set to Ad-hock is supposed to be using the router frequencies (It looks like a router) .. A device that shows up as "Ad-Hock" in your prospective host list is using CLIENT protocol. so your computer has to "Flip"
I have not attempted this but if you have or can borrow a Wi-Fi router for a bit, Plug it in (no WAN connection) and see if you can connect the phone to it, then connect the computer to it, Using a LAN cable to the computer first time set it up to act as a simple access point, not a router.. Might work.
