You could do a search for them (start>search>files or folders). You may find them in their own folder in "C" - not under the programmes folder - some of these programmes have slightly obscure names so try going down the various folders in C drive.
VoG - That's where I got them from ..it says .. "Image Resizer This PowerToy enables you to resize one or many image files with a right-click." ...but it doesn't indicate where you have to be to do the right click..... I've tried it in Windows Explorer but no joy..