Hosting Multiple Servers,

Hi,
I'm trying to host multiple servers. I have two IPS, but I'm able to host two different servers on the same ip right now. How can I host another on the separate IP that I have on the same machine?
I'm trying to host multiple servers. I have two IPS, but I'm able to host two different servers on the same ip right now. How can I host another on the separate IP that I have on the same machine?