Subnet change

I like to change my remote location ip address from 192.168.x.x to 192.168.y.y. It is 20 users and 5 printers with NT4.0 server environment. Only the server has static IP. What do I have to do to eliminate or minimize problems? What would happen if I just go to DHCP server and change it + change the static IP on the server? is loging on workstations will be a problem? What steps do I have to take?