( What is it )?

Type ipconfig in Command prompt and this shows up .. what is it ?
Connection-specific DNS Suffix :
Update: Ali...tks for the reply, who could have specified the WORKGROUP or DOMAIN to , It can't be me or the Techie who installed XP on my Comp. . WHAT is , in the first place... is it some virus, spyware, Malware ... Something I should be worried about ? Please do reply .