Try this:
1. type ipconfig at the run command
2. look for the default gateway address
3. open your browser / type that address / depending on what modem/router you have, login into it (you don't say how you are connected)
4. in there will be a setting for a static IP / set it to 192.168.x.x (the first 'x' being a 0 or 1, depending on your router)
5. go into Control Panel / Network Connections / Local Area Connection / Internet Procotol (TCP/IP) / Properties
6. change your dynamic IP to static and put in the address you did in the modem/router
I know this seems complicated, but if you want a static IP then this is the process
Alan <><