Best plugin for event registration/payment/fileupload

Hey guys,

New to the wordpress scene. I have volunteered to help out my university. There is an event occurring sometime next year. (www.neu.edu/emi2011). I have been messing with cforms2 and event-registration and I am trying to make a simple registration process (possibly with a saved username and password to further upload more papers) with payment and having the ability to upload a paper for the organization. I need the names etc and papers to be labeled for each person so it’s easy to find who uploaded what and who has registered and payed. What’s my best avenue.

Thanks ahead of time,
John Zadroga