DHCP is fine, unless you're looking to perform advanced networking tasks. Here's how to set a Static IP address (or DHCP reservation) for any device on your network.

How to Use a Static IP Address for Web Hosting. Before your business's computer or server can be used for Web hosting, it must be set up with a static IP address.

I just had comcast setup a static IP because we were having voip phone issues and the phone company wanted a static ip and a router saying they had to set something they couldn't set with the ...