Are these backup files from SQL Server 2000? If so, you really should try to get these converted to SQL Server 2008/2012 formats. A blog post from Ahmed Ibrahim walks through a set of scripts that you can run in SQL Server 2008 or 2012 that will allow you to restore these backups into 2008/2012 and convert them. This will allow you to access easily from VS2012/2013.
In my case, I had Visual Studio 2010 Enterprise on my system when I initiated the setup for SQL Server 2012 Standard. After the SQL 2012 got underway, it stopped and prompted for the VS 2010 setup.msi. At that point, I ejected the SQL Server disc and inserted the VS 2010 setup disc. Then I used the dialog presented by the SQL Server 2012 setup program to browse to the root of the VS 2010 DVD, selected the msi there, and opened it. The SQL 2012 setup continued and when I saw that it was again installing SQL components (rather than VS 2010 components), I ejected the VS 2010 disc (which caused the SQL 2012 setup program to display an error that there was no disc in the drive), placed the SQL 2012 setup disc back into the drive, then clicked the Try Again button. At that point, SQL Server 2012 resumed and after some time it completed successfully.
Best Answer
apparently this is because I need to download and install
Microsoft SQL Server Data Tools - Business Intelligence for Visual Studio 2013
http://www.microsoft.com/en-us/download/confirmation.aspx?id=42313
I will get this done and if it all works I will accept this answer.