[ODE] space collision

[Lukas Toenne]

How does colliding spaces work with the new API ? In the docs it says that the 
collision functions take either geoms or spaces as arguments ("If a space is 
passed as o1 or o2 then ..."), but my compiler keeps telling me 

error: cannot convert `dxSpace*' to `dxGeom*' for argument `2' to `
   int dCollide(dxGeom*, dxGeom*, int, dContactGeom*, int)'

when i pass a dSpaceID instead of a dGeomID.
What do i have to do ? Are there tutorials/examples using the new API ?