To change the name servers in Mac OS X:
1) Go to your Apple menu and select ‘System Preferences’.
2) Open the ‘Network’ icon
3) Highlight your connection type in the left column
4) Click the “Advanced” button
5) You can specify the name servers on the “DNS” tab. If you’re an E Street DSL customer you can use the following name servers:
66.17.141.11
66.17.141.34
6) Click OK to save the settings.