A windows program to update dynamic DNS services.
I used to use ipcheck. From DynDNS Updater I switched to IPCop's dyndns updating support.
Updating dyndns information using wget ∞
Snippet from http://wiki.netbsd.se/index.php/Shell-Hacks
Here is a shell script to update your dynamic DNS address.
It is useful to include this information in your ip-up script if you use ppp for internet access.
The url syntax information was provided on the www.dyndns.com site.