I found out that the display is 480*234. I ran this little tool called Resinfo.
You can see what happens in the following video.[Please Register or Login to download file]
just to be sure i do this right:
formatted a new SD card.
Called this card 737_PLUS , just like the original
Inside i created a new folder called MobileNavigator .
In this folder i dragged the downloaded IGO, and changed the IGO.exe name into MobileNavigator.exe.
sys.txt is also in the same folder.
Evertime i make changes and try, i clean the saved files