this might not be what your looking for, but I've been using protopage.com to organize my bookmarks. It's pretty handy if your bouncing around different PC's.
As far as i know, they don't give you space to store files though.
I just got my new little Asus Eee PC and I'm realizing that I'm going to be going back and forth between computers even more now. I wondered if you all have any suggestions for good sites where I can keep my bookmarks up-to-date. I have one old desktop that won't run Firefox, for some reason, fo I need something that works in Opera. Also maybe some place to store files online without having to pay for it? I'd love to hear your recommendations, thanks!