>>> Thank you. It works!!!
你有没有Microsoft Office?
Go to "All Programs" -> "Microsoft Office" -> "Microsoft Office Tools" -> "Microsoft Office Picture Manager".
Then you select the photos you want to resize, click on the tool bar "Picture" -> "resize"
可以一次resize多张照片,一整个folder都可以。
>>> Also, I found the function on Microsoft Paint. Choose "Image" menu and then select "Resize/Skew" sub-menu. It works, too!
>>> Wow - CFC is a very good resource for helpful information. Many thanks to those who replied my question and also to each individual who has contributed his/her knowledge/talent/time/effort to make CFC a good resource for almost everything!