If you have a static setup then you can add a lines to the relevant interface in /etc/network/interfaces
Code:
iface eth0
address 192.168.0.200
network 192.168.0.0
netmask 255.255.255.0
broadcast 192.168.0.255
dns-nameservers 11.22.33.44 55.66.77.88
dns-search foo.org bar.com
See /usr/share/doc/resolvconf/README.gz for more info.
If you are using dhcp, then bringing the interface down and then back up again should automatically set your resolv.conf file.
HTH,
Evo2.