How can I setup MSSQL2005 to respond to “localhost” and another name at the same time

<add name="myConnection"
     connectionString="Data Source=DevServer;Initial Catalog='devData';Persist Security Info=True;User ID=devUser;Password=devPass;"
     providerName="System.Data.SqlClient" />

127.0.0.1       localhost

# Comment this line out when back on the normal network:
127.0.0.1       DevServer