2D Shooter using Windows GDI

I want to load a bmp(enemy) on top of a background bmp. Then the user has to shoot the enemy before the enemy shoots them. I can't figure out how to make this work correctly. I couldnt include the art because the zip would be too big. The Background is 800x600 and each enemy bmp is about 60x80. Mainly I need help on how to make the bmp's appear correctly.

Thank You for all of your input.

It´s kind of hard testing/debugging you game since no bmps are included

One time a spent a week on a game, and I almosted cryed, then I realized I called the background after my display random objects code....