[Asterisk-Users] A Few Questions

[C. Hatton Humphrey]

I've been watching the mailing list for a few days, have done some
archive searching and still have a handfull of questions (I've looked
for most of these on voip-info.org and a slew of other "asterisk
related" sites).  I'm going to throw the ones that are foremost in
this email and will add more as the need arises.  Before I do so, let
me explain my setup.

I have Asterisk running on a FreeBSD machine that is also my
router/firewall and MySQL server.  It is running fine and I've gotten
it working with FWD and will be testing a direct IAX server in the
next few days.  I'm migrating from a Packet8 Virtual Office setup and
have managed to get their "DTA-310" working on my installation.

Here are my questions.-
1. Does anyone have suggestions for license-friendly MOH sources? 
Same for reworks of the voicemail and autoattendant prompting?
2. Help! I got the MWI light on the phone (an Astra powered by the
DTA-310) but now it won't go off.
3. Is there any way to have asterisk take a phone back to a plain
dialtone instead of a fast busy when a call ends?
4. Even though I've got the basics working I keep wondering what else
is available.  For example I see on the * website that things like
transferring and web access to voicemail are available but I don't
even know where to begin looking for that stuff.  Where are the guides
that I'm missing for all of the different configuration issues?
5.  All my other boxes are Windows machines - can someone recommend a
config tool that I can run on Windows to help me get everything
straightened out?
6. What hardware is really needed to bring in a copper pair?  I have a
single CO line that we're using for faxes and I'd like to be able to
include it in our outgoing call system for 911 capabilities.  At the
same time I don't want to throw down a  bill for a card.

Thanks!
Hatton