drawing a bitmap

Hey !
i don’t know if you have seen the article about the game Glest at opengl.org, there are bitmaps drawn on the 3d scene to tell the player the amount of food,wood and ressource. This is my pb : i don’t know how to put ,let’s say a bitmap in an array, on the screen. I have tested to texture a quad but the result is not good, i have tested glDrawPixels but i have no good results … If someone can help me.

no offense, but maybe if you should post this question in the beginner forum…