dns for private domain

Hi All: Does a DNS have specific reqirements? I imagine it would not need the root cache file since it would go nowhere except own domain. I set up a DNS (named it as "lab.com") server in the lab and it seems to be working fine; I can resolve hostnames on my linux box and window box, but on Sun Solaris machine I got "non-exist domain" error. Anything specific for the Solaris' resolver or I need to do some extra on my DNS configuration? TIA Dave Find local movie times and trailers on Yahoo! Movies. http://au.movies.yahoo.com