Here's the simpliest way to do it:

1. Right click on the picture and a little list will pop up.. click on 'edit'

2. It should bring up the Paint Program.

3. Look at the top and you will see a tab saying 'image'.

4. Click on it.. and it will bring down a menu, go down to 'stretch/skew'.

5. Click on stretch/skew and go to the FIRST TWO boxes that say 'horizantal' and 'verticle', type '50' in both of those boxes and hit enter.

6. The image should shrink, do this as many times as you need.

Hope this works!