HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\NetLatency\SwitchMonitor

PollDNSLookupName                   REG_SZ

This specifies the DNS name to look up for the Internet tab.  By default, it is www.google.com

PollDNSRemoteServer                 REG_SZ

This specifies the DNS server to query for the remote DNS check for the Internet tab.  It uses 8.8.8.8 by default.