It is only a few hours before the Imagine Cup Fall Round 2 closes, and I usually get a few emails asking how to upload the videos, software files, etc.
This is a long post so you may need to scroll down to see the entire explanation.
Login
First Login in to the https://www.ImagineCup.US site. If you forgot your password (which is common) the site will send you your password if you got your email correct.