SSIS - Executing SQL code modules

I am brand new to SSIS.  I am using MS Visual Studio 2008 Professional Edition. I understand from my few exposures to it that you can set it up to execute several SQL code modules in turn, one after another (not all at the same time).  I have 7 such code files (Pass1.sql, Pass2.sql, ..., Pass7.sql).  

I created an SSIS project and in the control flow section I put in 7 instances of the Control Flow Item "Execute SQL Task".  I tied these together with Precedence constraints.  In each item I set the SQLStatementSourceType property to "FileConnection" and in the SQLStatementSource property I put the full file spec.

When I try to execute this mess SSIS tells me it can't find the source code.  Yet if I copy the entire filespec and paste it into Windows Explorer, SQL Server Mgt Studio fires up and loads my source file correctly (so I know there isn't a mistake in the file spec I put into the property).

I must be missing something.   What is it?  See attached Word Doc with 3 screen shots in it.

Thanks
DocError.docx