[Darkjedi]

What you are referring to isn't called AGPS, but rather called Cell-ID, which is a GSM technology. Windows mobile doesn't support the cell triangulation feature for some reason, which is a problem because we can't use the My Location feature without enabling GPS first. This was an issue raised with the latest Google Latitude where WM won't update it's location if the phone is in standby or if Google Maps is closed because WM can't initialize the My Location function that relies on tower triangulation.

AGPS is specifically the technology that requires GPS satellites, but uses nearby cellphone towers to 'hint' as to it's location which helps the GPS chip lock much faster than standalone GPS.