I have followed the instructions exactly, and have installed SQL Server on 
my system.
I rebuilt the solution in VS.NET, changed the machine.config, restarted, 
etc.
I get this error when I call http://localhost/thephile/   :
------------
An unexpected error has occurred on this page. The system administrators 
have been notified. Please feel free to contact us with the information 
surrounding this error.
The error occurred in: http://localhost/thephile/Default.aspx
Error Message: Login failed for user 'sa'. Reason: Not associated with a 
trusted SQL Server connection.
---------------------------------------------------------------------------
-----
Stack Trace:
System.Data.SqlClient.SqlException: Login failed for user 'sa'. Reason: 
Not associated with a trusted SQL Server connection..........


now, I'm asssuming that this has something to do with how I set up SQL 
Server on my computer. but I don't know where to find and change my user 
id to 'sa' ?  where do i find the user id and password settings for my SQL 
Server installation?
a little help please!!!

thanks!!

Right click on the server-properties then security tab, check 
Authentication to SQL server and Windows.

Hope that will help.