Joe,

my guess is if you can ping your server through the router then your address
translation and dhcp issues must be ok surely. what i was meaning about ping
pro is that you can scan for ports that are responding from the server which
may well reveal that the router is blocking 3050. do you have other services
running on the server? they would show up in ping pro and 3050 would not.
can you access the router setup at all to see what it has blocked or
forwarded?

Kind regards,
Pete