OK.... this is giving me a headache but this is the idea:

We are launching an affiliate program. People signing up for this program will be able to host their files with us. Their files will be in "user dir's" on our domain. ( http://www.ourdomain.com/user-dir )

We want to provide people with statistics on their files (mostly EXE or ZIP files).

Would Urchin be able to do this?

People should only have access to their own stats so they should come in a sub-directory of their user dir.