I need a way to remotely connect to 2 users who can’t get broadband
because they live in remote locations.

The locations are
Jamul, CA (AC: 91935)
Bonsal, CA (AC: 92003)

I used to use StarBand to connect to used like this, but can not use
it anymore.  Now we use Outlook connecting to an Exchange server. 
This works over MAPI, not IMAP or POP3.  MAPI does not work over
satellite because of the latency.

I need something that does not have large latencies, and that isn’t
firewalled behind a proxy server  (I control the client PCs with VNC
and Remote Desktop, so I need to be able to connect to them by
reaching their IP numbers).  I also need to be able to do VPN and
audio conferencing.

I heard there were now microwave solutions and solutions that use
cell-like sites.  Maybe there is now DSL in these two area.  There
wasn’t 5 months ago when I looked on dslreports.com

Any ideas?