I don't know if any of you have seen this software before but I've found it really easy to use.get it from here... http://www.imageresizer.com/
and here's a little write up of what it does..
taken from the mihov website
Mihov Image Resizer is a handy tool for batch resizing images in bmp, gif, and jpg picture formats. You can make pictures or any kind of images smaller or bigger - whichever you need at the time.
The second feature of the program is converting pictures between different graphic formats. You can change from bitmap to JPEG or GIF, from JPEG to GIF or from GIF to JPEG. Again, this can be made in batch mode. That means that you will only have to select the images and the program will do the rest for all selected images.
The third major feature is rotating. If you have a digital camera and you took some upright shots you will have to turn them arround. What better way than with Mihov Image Resizer? You can rotate the photos to the left or to the right. This feature comes handy also when you are scanning and are too lazy to turn the pictures...
Mihov Image Resizer is also a perfect utility for creating thumbnails, so you can put them on your home page for faster loading or send pictures with smaller size to family and friends by e-mail.
Currently, these languages are supported: English (default), Slovenian, German, Afrikaans, Chinese, Dansk, Dutch, Finnish, French, Hungarian, Italian, Lithuanian, Norwegian, Polish, Portuguese, Serbian, Slovak, and Spannish, Swedish, and Turkish. And you can add your own language here.
Mihov Image Resizer works in batch mode, which means more time for you!
very simple
try it