i just edit them through the paint program...go to imagine, stretch/skew...and then a box will open, where it says horizantal and vertical, put in like 15-19% in both, leave the other percentages at 100...then press ok...go to save as, so you dont override your other ones..then you can click on the photo and look on details to see if they are small enough, if not, redo the sizing from the original photo...thats how i do it...pretty simple.
Luke P