Basic Netboot server settings

I have a Tiger server with DHCP, NFS, AFP, NetBoot and Web services running. I have one subnet enabled with a 192.168.0.100 to 110 scope. I created an image sucessfully which is enabled and set for NFS in the NetBoot section of Server Admin. I still cannot boot to this install image though. Holding N on the IntelMini brings the flashing globe, but eventually goes to the ? folder. I booted from the restore DVD on the mini and the image shows up in the select startup disk pane but after choosing it and rebooting I get the same results with no pickup of the netboot install image. Are there a set of basic quick and dirty settings one can relate to me where I can get this working? I'm pretty confident that my dhcp settings are at fault and that's where the problem is, but I've tried so many times I don't know what else to do. Any help would be greatly appreciated. Thanks