Just my two cents worth. I purchased a 700 a few months ago, and was saving up to purchase the NavKit from Nokia when they pulled it. I presume because WayFinder bought Navicore, and Nokia bought Navteq. I was able to download the Navicore software and install on the 770, during the attempts to validate the key code I put in (Navicore will not sell me a key code) I was abel to "see" my GPS receiver and was able to locate me correctly on the map. I live in Ontario Canada.
It seemed to work OK, but as I said Navicore would not sell me a key and well Nokia were just as unwilling. If it was a cell phone no problem. Has anyone gotten NavIt to work, I am not a linux guy and the compile just gave me errors.
Would anyone that is unhappy with their Navicore be willing to sell me the key code and DVD, I need nothing else...

Thanks