uhh... On my computer I have this thing where you can edit photos, so I don't know exactly.
The only suggestion I could possibly give you is go to "Paint" every computer pretty much has it. Then once there... Here's the "steps"
(BTW - Some cumpters may be different)
1)Go to START menu on computer
2) Click on ALL PROGRAMS
3) Click on ACCESSORIES
4) Then go down to PAINT
5) Once there go to FILE
6) Then to OPEN
7) Find picture you want to make smaller and open it
8) Once it's open click on the square in the tool bar, with dashed lines
9) Cut out what is not needed for the photo.