Ethan A

I've tried changing my IP but i get disconnected..so i know im not doing something right. is there any where i can go to find out my subnet, gateway, ip etc? all im trying to do is change my IP because a particular set of forums has banned me. can i just make a random ip by typing in numbers? do i have to change my subnet and gateway to successfully "change" my ip?. my internet provider is..verizon wireless do i have to log into that site to get those numbers? thanks all for your help