There are many methods to resize images, everyone has their pet method (Paintshop, Infanview, Photoshop etc) , but having tried several methods I have found this to be the simplest, quickest and most efficient method. If you’re designing web pages it’s a must have. 

First download a copy (only 520Kb) of Microsoft XP Image Resize Powertoy at http://download.microsoft.com/download/whistler/Install/2/WXP/EN-US/ImageResizerPowertoySetup.exe 

Save to your favourite download location and run Setup.exe to install. 

To resize an image simply find the image you want to resize using Explorer. The easiest way to open your directory tree is to right click on the start button and select explore.

Select the size from the pop up box, then click OK.  If you want a custom size click the advanced tab first.  The file will be saved in the same directory (folder) with the same filename but with (small) appended.  You can select and resize multiple images using standard windows click, shift/click and ctrl/click techniques.

In the 3rd screenshot above, IMG_0160.jpg has been resized and is named IMG_0160(Small).jpg