Sorry I didn't get back sooner but like Stephen says....

As I pointed out earlier it doesn't actually matter which PC you run it on....
Its a bit more sophisticated than just looking at its IP in the ifconfig and sending that... it actually uses its own protcol to do it.

If you use the ddclient and dyndns.org I can send you the config files I use.

I had to create the init script, not that its hard or anything but I guess it saves messing about!!!