In our household we have two students, and so ordered a copy of Windows 7 Professional and Windows 7 Home Premium in both x64 and x86 versions - a total of 4 products from Digital River.
Having used their download manager to download these files, I now have 6 files: 4 .exe files (as expected) plus 2 files named setup1.box and setup2.box.
The .exe files are, however, only just over 70KB each, setup1.box is almost 3GB and setup2.box is 163KB.
Running the Home PRemium versions fails immeditaely, saying it can't find the required files. Running the Pro x64 .exe file starts to build a .iso file ("Unloading the box"), but then fails with an unspecified error.