Speed camera

Could anyone please tell me how to display the speed on the approch to a speed camera. I have installed the safety camera download from pocket GPS and it is working fine, just don't know what I need to do to display 30, 40 ect.
Thanks

Your question may have two meanings:
1. to display current speed in Navigator, go to Status Bar Preferences in Change Preferences and add the value to the display
2. you need to download the version of the speed camera database which includes the speed data - explore a bit further to see all the various format options. You will see it is broken up into different speed categories, so is a bit more complex to download and set up.