From time to time I see posts about people that can't get a computer to recognize the phone via USB. Personally, I hate having to connect via USB and do it wirelessly. I've been using Sugarsync, and it works perfectly.
Sugarsync allows you to share folders among computers and mobile devices. Because phone storage is minimal, you can specify specifically what files to sync. Files are encrypted while in transit and in storage.
Signup link for a a 5 Gig account free account.
FWIW . . .