im creating a basic q3 render thingy but i have come 2 problems. at the moment i use only type 0 (Polygons) of the bsp but i believe that there are patches and billboards and more stuff can some one help me... Second Question - You know the faces use a triangle strip, well are all the verts of the strip on the same plane or do i have to create a triangle for each strip(In connection with collision detection)

You might want have a look at the gametutorials.com site, they have a few projects that deal with loading Q3 .bsp's clicky - there's also an unofficaial spec on the format here (same site).

HTH