POR FAVOR, AYUDA!! HTTP-40. Named pipes error

[iruki]

hola!
lo primero, gracias por responder.
Sigue sin funcionar, he probado con los connectionstring que me dijiste, pero sigue dando el 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)

Tengo que cambiar alguna propiedad de Named Pipes o TCP/IP?? Tengo esos dos enabled.