Static versus Dynamic IP Addressing…

I planned to realize my small business involving 11 computer units, including the server. The type of my business is internet gaming and savvy. I want to connect all units to the internet, but I don't have an idea in configuring it. I am looking forward to my business and I really need to know what is the ideal configuration.
All other hardware devices and software applications used in my network are already there. As of now, we are using DHCP to connect to the internet automatically. I can't differentiate from Static because I don't have an idea how to use IP addressing. What should be the ideal network configuration to use in my business? Please tell me how to do it.
