how to avoid redrawing background image

I need to draw a somethings over a background image periodically. For example, draw minute hand and second hand on a clock image. To do so, I have to erase current hands first then draw new hands. But erasing hands will destroy the clock image. So I have redraw clock image and before drawing ne

Who owns game's intelligent property?

I would like to develop some game sharewares, but I do not know who owns the intelligent propoertie of games like Solitaires, Tetris, Socoban, Tic Tac Toe and bubble etc. Any info will be helpful. Thanks Matt __ Do you Yahoo!? SBC Yaho