Originally Posted by
GrumpyDiver
Yes, the Photoshop Image Processor will do exactly what you want.
Go the the <Files> menu and select <Scripts> from the drop-down list. The first item of the next drop-down list will be <Image Processor...>. Select that and then follow the workflow that is presented to you.
You will need to select the location of the files that you want processed (they should all be in the same directory to make life easier), where you want the image processor to store them. The next item will be the processing you want done, so select the size, image quality and check of the sRGB, select jpg, if you are planning to commercially print them and post them on the internet. You can also go to the 4th item if you want other image manipulation done.
Press the <Run> button and CS5 will chug away and process the images down to the size you want.