Navman icn520

[drpuzzled]

Hi can anyone tell me if its possible to change the default icons and if so were would i find them and what file extention do they use.

thanks for helping a tried noob,ive been trying to sus this one out for quite a bit now.
i think ive sused everything else out including free speedcam locations amongst other cool stuff.
Im enjoying customizing all the icons,but get stuck when it comes to the default icons.
Also is it possible to add POI to the navman default POI directory,maybe swaping some defaults for other POI of my own choice

Thanks again.