I'll attempt to help.
Ringtones: try this site first... http://www.phonemodz.com/chris5h/bb.wml
on your Blackberry in your html browser. They should work High Quality for you, as they are monophonic midi tones.
Folders: if you save a message on your Blackberry, the saved messages can get accessed through a shortcut on the home screen.
You can also save your own customized searches of messages to create your own shortcut. Ie. All messages with "guy" in them, viewed when hitting alt-g.
Hope that helps.