I need help re-painting my entertainment center that I believe is real wood (it is heavy, large & would be expensive to replace). The problem is that it has a slighly shiney, outer layer and paint iwll just come right off it if I paint over it. In addition, I would like to possible go with a black rustic look. Should I sand the entire thing, will that do anything? Is there something I can apply before I paint? Please help me...once upon a time a big oak entertainment looked good now it's a huge eye sore....thank you.