System Tab
the system tab contains fields for setting the system (host) name and domain name. these parameters may be necessary to access your isp's services such as mail or news servers.
1?system name
this is the host or account name given by your isp for naming your pc. it is often the primary email name of your account.this name can be up to 30 alphanumeric characters long. spaces are not allowed, but dashes "-" and underscores "_" are accepted.
2?domain name
this is the extended domain suffix that follows your isp server names. for example, if your isp's mail server is mail.sfbay.myisp.com, then your domain name is sfbay.myisp.com.