I can not have a texture paint in cycles like blender render !!!

Support Materials and Textures
1

hi guys.I’m having a problem with texture painting in cycles however i can do that in blender render easily.is there any mentionable difference between texture painting in cycles and blender render ? and also i don’t even know that what is wrong with my do.

2

Maybe those two tuts are helpful.
How To Use Painting Modes In Blender Cycles - YouTube
Blender 2.62 Cycles TexturePaintMode Tutorial Deutsch - YouTube