S&T is not supported and IMHO as a car navigation option it sucks. If you want to use S&T it is possible but you'll have to set it up manually.
Supported GPS options are Iguidance (any version), MapMonkey, and Freedrive and in V3 google earth is intergrated.
Stick a shortcut to RR in your windows startup folder and it will load when XP loads.
Ill prob make a way to set the password from inside the skin, where it should be