you already have the dbPositionCamera command in there so i assume you know a little bit about the camera.
for really basic camera movement you can try something like
dbPositionCamera(385,23,dbObjectPositionZ(1)+100.0f);
otherwise look at the dark dungeon example game and use that code to get the result.
tip: you will need to use vectors
Also its probably best to start off as i did with basic 2d stuff. so that you get a feel for how the engine works, how to position and rotate objects, you will find it very slow progress if you are asking for help with little things like this (not having a go at you its just better to learn yourself) i learned 90% of what i knew about dark gdk from the help file its definately worth reading through.
void Void(void){(for i = 0; i < i+1; i++){cout<<"bubzy rules "}}