Ipanema - IP Reporting Utility ... Great Shareware!
For a mere $4.95 you can
have an IP reporting utility that will email you when
your IP changes. If you are constantly "on the road"
and need to access those valuable files from home,
this simple utility can have you reach your remote
computer without the worry of a refreshed IP address
change.
Ipanema will report your
IP addresses to you via OS X Mail, once a day at a
time you can determine. The software can also send
instant reports any time you wish. When an IP address
changes on ethernet, airport or PPP, Ipanema will
automatically send a report--even telling you your
"real" non-firewall hidden IP address! You can find
Ipanema here - IfThenSoftware
Leopard
Only ~!