Publishing Web Application

Hello to everybody.

I got a problem like this:

I developped a project using Visual Studio 2005 Standard Edition on a XP pro x64 Machine using a developpemet data area on a SQL 2005 Express Edition.

Everything is ok, even the user and profile management. But when I try to publish my application on IIS (we're talking about a little Intranet), I get my problems. I think is important to say that the server is a Windows Server 2003 and data (database reproduced as a backup of the developpement one) are under an SQL 2005 Standard. The strange thing is that by publishing the "site" VS create a DB under SQL Std named with the path of local ASPNETDB.MDF.

I can reach everything, all data are ok, but when I pass the login page going to main menu on my web-application, I get this 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

I think the problem is SQL STD and the fact that it's not "able" to manage MDF files.

I even tried to re-map the SQL DB (named simply as ASPNETDB on the SQL std) by adjusting the web.config file on connection type and user and password to reach the DB ASPNETDB but it does't work anyway.

Can anybody solve my problem?

Thank You