dwizeman wrote:
i need it in a vector quality
There really is no such thing as "vector quality". If the picture is a photo, Illustrator's Image Trace feature cannot increase perceived "quality" through conversion to vectors. In fact, the process is rather destructive, and the end product will serve no better purpose than a low quality raster image. If the picture is something that should be vector to begin with; a logo or other graphic best defined mathematically, you'd be better off tracing it manually.