I went on Google and found these. Check them out and at least one of them should solve your problem:-

http://www.obviousidea.com/windows-s...image-resizer/

http://download.cnet.com/FastStone-P...-10319476.html

http://download.cnet.com/Free-Pictur...-10297789.html

I have not tried any of these so I do not guarantee them to do the job. If they don't then do a google search until you can find one that will work. Links to your photos are OK on this forum, however it is unlikely that very many members will click on them to view your photos to be able to follow your progress and help you with questions.