Using Microsoft Paint, how do you change a color picture to black and white?

Question

I'm not printing the photo. I want to change to file to black and white.

Answer 1

Open the picture.
Select file
Select "Save As"

Click on the "save as type" selector.

The first option listed is monochrome bitmap.

Choose that and save your file (probably with a new name).
That's your black & white!

If you want it in other than a .BMP format file, you can save it as another type from within paint (like a .JPG) or anything else.
The color's all gone now and they'll be black on white also.

Answer 2

Change your printer settings to only print in black and white.