[Midknight]

psuedo,

Ok, what format are they? You should be able to right click and select "edit.
This should open Microsofts paint programm.
At the top click on "Image"
Then click on "Strech and Skew"
Under the strech selection just enter a number, so 75, then hit enter.
This will reduce the image to 3/4 the size it is.
Hope this helps.