Do you get any error message about the connection. Since you're using a trusted connection, the credentials running the process should be defined so that the user has access to the database (is listed as a login in the SQL Server). When you run the app in the desktop, your user account is used so it's a bit different situation.
Simple way to try if this is the problem is that create a SQL Server authenticated user with username and password. After that change your connection string:
<connectionStrings>
<add name="BuiltTech" connectionString="Dsn=built;app=Microsoft® Visual Studio® 2008;wsid=PRASHANTH;database=BuiltMaster;network=DBMSSOCN;trusted_connection=No;User=<UserName>;Password=<Password>"
providerName="System.Data.Odbc" />
</connectionStrings>