ian,
No, I'm sorry but the source package only includes the source.

To rebuild you would hve to do the following.

Prereqs: VS 2003, a working DotNetNuke 3.X web site on your local machine, Repository 3.1.10 install and source packages, Nant utility ( downloadable from http://sourceforge.net/project/showfiles.php?group_id=31650&package_id=23704&release_id=455595 )

1. Install the 'install' package of the Repository 3.1.10 module and test to make sure the Repository module is installed properly
2. Unzip the 'source' package into the DesktopModules/Repository folder
3. In Windows Explorer, double click on DotNetNuke.Repository.build to execute the build script using nant

Nant will recompile the module and create new install and source packages in the DesktopModules/Repository/packages folder.

take the new install package and install it to your DotNetNuke 4.X web site using the Host->Module Settings page.

if you are unable to do the above steps, send me a private email and I'll send you a link where you can download a re-compiled version of the module