In Photoshop (I use CS2), open your image.
Then, select Image-Adjustments-Channel Mixer. When the pop-up box opens, check the Monochrome box; this will change the picture into black and white. Another way to do that is to select Image-Adjustments-Desaturate.
Then, select Image-Adjustments-Brightness/Contrast, and play around with it to get a good image.
And there you have it.
Here's another example, just to prove that each picture will look different, and each picture requires different settings in the Brightness/Contrast area.
Romans 15:17 "Therefore I glory in Christ Jesus in my service to God."