I would like to draw a simple line from (x1,y1,z1) to (x2,y2,z2). That's all...just draw a line. I've spent hours and hours looking at different tutorials, and I haven't found anywhere how to simply draw a line. I can draw polys to my hearts content, but can't find how to set to wireframe mode, or simply how to draw a line.

Are there any simple tutorials out there that would cover something this simple, or does anyone have any code samples they would like to share?