This works great, and it's free:
http://dropdav.com/
The service let's you use the webdav protocol to upload to/download from DropBox. Saw this in another thread on MacRumors and signed up, and once you do you can access and upload files from directly within Pages and the other iWorks apps. (These apps have Webdav built in...I never noticed this until I saw the DropDav service recommended.)
Yikes. You have to give them your Dropbox credentials?