I'm trying to get a BlackBerry server running on my SBS.  

Does anyone, or anyone you know, run a BlackBerry
Enterprise Server on their SBS2K?  (A "Yes" on this one
would be huge.  Be my yes.)

The current headache is ISA configuration.  I haven't even
installed the software, instead focusing on getting a
positive result from their connectivity test program.  The
BES needs outbound access on port 3101 to BlackBerry's
servers.  It also needs either a transparent proxy
connection, or outbound port forwarding.  

First, port 3101.  I believe I need to create 2 IP Packet
Filters - 1 TCP, 1 UDP.  Here they are:

Filter Name:  SRP Connection TCP
Protocol: TCP
Direction: Both (overkill - was in random tweak mode)
Local port: Fixed - 3101
Remote port: All ports
Filter applies to: Default external interface IPs
And: All remote computers

Filter Name:  SRP Connection UDP
Protocol: UDP
Direction: Both
Local port: Fixed - 3101
Remote port: All ports
Filter applies to: Default external interface IPs
And: All remote computers

Doesn't that make a bigger than needed hole in my firewall?

And the transparent proxy/outbound port forwarding:
I'm at a loss, here.  Can you bypass the proxy for local
requests?  Should I put the firewall client on the SBS?
(that sounds evil)  Is outbound port forwarding possible
with an ISA Server?

Did I ask if anyone ran a BES on their SBS2K?

TIA

Jim