Disrespective: I didn't try the tracker option, but it certainly found my phone through the web interface.
I decided to try out Samsungdive with my Galaxy SL (GT-I9003).
Managed to register account and phone details and when I log into Samsungdive my phone and number show up correctly.
However if I try to do anything from the webpage( like Location Info Request) I receive a message "The function is not supported for your area".
Phone settings are as required according to FAQ on Samsungdive.
Can find no relevant info on this message anywhere.
Does the service not cover New Zealand?