Regarding Web.config For Sql Server Authentication

Hi All,

   I have a query. I want to use sql server authentication
for my asp.net application. I have created a seperate username and
password for the sql server. Now I want to use that username and
password to establish the connection thru web.config. In web.config, I
don't want to give the username and password of sql server. Instead, I
want to get those details in other ways. Please tell me how to handle
the connection string with more security?

Balaji