http://www.google.com/gmm/mylocation.html?hl=en
Installed Google Mobile Maps 2.0.0 on i-mate SP3 (Win mobile Smartphone 2003SE). Holux GPSlim236 BT GPS. Displays NZ (GPS) location, and also optional satellite view. Neat.
Does not seem to work (yet) for (Wellington) cell-phone site triangulation (ie without GPS) - perhaps NZ cell-phone towers not yet in data base.
To download 2.0.0 go to http://www.google.com/gmm on your 'phone.