If you want to change your Icon...read this thread (in total, if you want some custom icons )
For camera alerts go to MapMonkey:-
Make sure the following boxes are ticked
Auto Alert 1
Auto Alert 2
Run MapMonkey config/Advanced GPS Tab
Tick the box "Enable speed camera alerts"
Tick the box "Add camera locations as they are detected"
Input Ist & 2nd Warning distances ie. 500, 100
Make sure you have indicated the database you are using and the Speed format, which is usually "Autodetect"