The subsurf makes very bad result, when I use triangles in my modell. The result worst, when I use quads AND triangles.
Why? There is a solution?
No solution
is a characteristic of SubSurf algorithm.
Works best when you have only quads.
Stefano
yes there is a solution!!!
practice making models only with quads 
.hate triangles like cancer to mankind.i am seriously practising this and have somewhat mastered it.
LOL!!!
Too true!!! I’v not ever modled with anything else, but im sure triangles have their uses. 
Matt
Blend on, and blend well
Yes they do. Game engines, (other than Blenders), require triangles for some reason. So if you are going to make a character for the Quake engine, for example, you will need to make it all in triangles.
BgDM
Cool, i did not know this, and as i am interested in (eventually) getting into making gamez, its good to know this!!! Though i do think i will be using The Great B game engine, to begin with at least.
Matt
Blend on, and blend well!!!
yeah…actually when i model lowpoly things i hate quads like cancer. 8)