There's actually a way of adding speed camera warnings using just Centrafuse.
Import the camera files as Favourites. Once there you can have them displayed on the map.
This needs a bit of work in Destinator - basically you need to edit the favourites to show them on screen and to set the warning distances.
Then just place a .wav file named exactly the same as your favourite in the folder \Voice\All
(eg, if you have a favourite called Gatso, you need a Gatso.wav)
Some useful wav files are here:
http://homepage.ntlworld.com/ken.hol...C/WAVfiles.zip
These are the ones I use - you will need to rename them depending on your favourites.