RH gennem proxy?

Hey!
Jeg har en gammel PC med RedHat 7.0 på.
Da jeg lige havde installeret RH kunne jeg godt gå på nettet gennem min WinXP pc med AnalogX Proxy. Efter ca. et minut hoppede den af nettet igen. Hvorfor mon det?
Den kommer med følgende fejl:

"Warning: the following hists are unknown:
  home.netscape.com
  home6.netscape.com
  internic.net

This means that some or all hosts will be unreachable.
Perhaps there is a problem with your name server?
If your siti must use a non-root name server, you will need to set the $SOCKS_NS environment variable to point at the appropriate name server. It may (or may not) be necessary to set this variable, or the SOCKS host preference, to the IP address of the host in question rather than its name"

Hvad er $SOCKS_NS??