Topic: DHCP to static IP

[Matthew]

I set up a file server, to use DHCP, without thinking when I first hooked it up.  I now what to change it, to a static IP address, but when I do so, the file server's name  ( fs-fileserver )  wants to stick with it's assigned IP address 192.168.20.70, instead of the one I statically assigned on the computer, which is  192.168.20.19.  Any suggestions on how I can tell the server, without rebooting, to retrieve the new IP address from the machine?

Thanks.