Changing IP Numbers and DNS Lookup?? HELP?

Hello List, Could some kind people help me with an issue. I am running SuSE 9.1 Pro I am changing my IP and need to install new static IP numbers and DNS name lookup numbers. Can someone point me to a list of all places in all files where edits to either IP numbers or DNS lookup numbers need to be changed to accomplish this? Can this be done all at once using YAST or some other GUI tool? Thank you for all comments. Peace john John Alegre