boot problem: NFS mounts before name server

Hi all, I have a small network where one machine runs a DHCP and a name server. This machine is also supposed to NFS mount certain directories from other machines in the network. There are appropriate entries for that in /etc/fstab. When I boot the machine, it tries to mount the NFS directories before the name server is started, so it can't resolve the names for the NFS servers and fails. Once the machine is up and running, I can do /etc/init.d/nfs restart, which will work. However, I would like to avoid that extra step. Any hints? Can I change the startup order of the name server and NFS client? Any drawbacks to this? How would I do it? Any other solution? Thanks for your help, Benjamin