do i need to register sub-domain names with my isp. we already have an ip address mapped to several domain names using host-header names. However we dont have a dns server, so we have to get our isp to add the names to there dns server. I was under the impression that if i wanted to implement a sub domain i.e., i wouldnt have to register the name just use the same ip address with the hostheader name set as Am i right <BR><BR>Pleas help <BR><BR>