iPhone, etc. Mobile content storage software?

I host multiple domains with Dreamhost… and have to date only used PC’s and standard basic webhosting with nothing fancy schmancy tacked on.

So I just picked up the iPhone 4S, and use the free services like Dropbox.com and Box.net etc as a mobile storage file content system.

I am curious if any of you know a good way to emulate these services taking advantage of my storage space within dreamhost hosting my own mobile content? WHat about photo gallery plug-in for use with iPhone? Can anyone help a retard out here and toss out some ideas if something along the lines of Box.net or DropBox.com has been emulated for hosting?