I can hereby confirm that Nokia Map Loader works with the N900 using Windows XP 32-bit. And that it does not work when using Windows Vista 32-bit.

I can also confirm that bunanson step by step guide is correct.

The Nokia Map Loader can be downloaded here:
http://europe.nokia.com/support/prod...d#/nokia-n900/

Also, there is no need to have installed or install Ovi Suite or PC Suite. The Nokia Map Loader will be sufficient.