your wireless card thingy(Rocketstick) is fine, as only your pc is actually connecting to the ATT network with it. Only Evony will know if they are monitoring and banning for ip's changing, although i don't know why there would be issues if your only using the same account. if you were multiaccounting at teh same time from the same ip, i can see why there would be issues if you didn't notify them of that. But otherwise, roaming ip's through speedstick connections shouldn't be an issue. Message a mod to find out for you for sure though