Question : how can i overcome the problem while connecting to sql server 2005?

i am trying to connect with my sql server 2005 from a remote machine in our LAN. I am facing with the following error.

An error has occurred while establishing a connection to the server.  When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

i have tried all discussion in EE, but were not success.

i have enabled remote connection, NP, firewall exception.

and this is my string to which i am connection from a remote machine to the server.

Code Snippet:

1:	Public cn As New SqlConnection("Server =servername; Database = mydb; Integrated Security = True")

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Answer : how can i overcome the problem while connecting to sql server 2005?

why you want to use windows authentication?
if you work from remote machine it's better to use sql authentication
in this manner:
you must create a sql user in sql server management studio
and then set permission to this user to mydb database
then connect from remote machine with this user and password in your connection string