Moving, my profiles on my older Blackberry offer loud, vibrate, quiet, and normal, but I'm not sure if those are the same as on your Curve. I do recommend the site: CrackBerry.com
for questions and cool stuff for your phone. I check out their user forums and have downloaded some ringtones as well.
think what you can do is set up a chime as the default ringtone for "quiet" setting. As for the docs and pdfs, I can't open them on my phone, but I'd check out those forums to see if you can find software to do it.