Hi,
If you mean do you need to set up anything extra for a static IP in Debian on a VPS, not within debian itself. You may have to setup a gateway on the VPS hosting software or main host itself depending on the type of networking that is going on and if the VPS software is set to automatically forward all traffic straight out on the main network feed or into a virtual network.
If you need a guide for setting up Debian Static IPs themselves, I found one on a quick google search
here.