LAN SET UP WITH PUBLIC IP

Lets Suppose, I have a simple modem and a linksys router with ADSL Connection, for the internet connection, I need to enter email address…PWD, and after that I AM ABLE TO GO ONLINE,………….However, I have got some of the IPs from the ISP side, which I am trying to use with my all 5 computers to remote access, which are as follows…..
Network Address: 65.45.12.16
First Usable IP: 65.45.12.17
Second Usable IP: 65.45.12.18
Third Usable IP: 65.45.12.19
Fourth Usable IP: 65.45.12.20
Fifth Usable IP: 65.45.12.21
Gateway IP: 65.45.12.22
Broadcast IP: 65.45.12.23
Please Help me with the LAN CONFIGURATION….Thnx