How to lighten picture but keep lettering dark

[dannyboy]

This is one for you computer experts out there. 


With the picture below, I want to lighten the background, but darken, (or at least not lighten), the lines and words. Whilst I like to think of myself pretty good with programmes like MS Office, I have never done much with programmes that alter pictures. Can any one give me some pointers please?

[zwilnik]

Like this? (will probably be able to do more with the original file)

[ntpntpntp]

Try playing with contrast in a photo editor

[edit]
I found a black & white filter effect on Lenovo Photo Master on this laptop (never bothered to try this software before)