At present there are 64 static IP addresses provided by our ISP. I need to keep the existing core IP addresses assigned to the router, and 2 servers. An additional 5 addresses have been allocated to switches. All other addresses are being used for desktop PC?s or network printers. The network now has a number of new PC?s which mean the total desktop count exceeds the available addresses. There are no further addresses available from our ISP and therefore I need a solution to overcome this.