I found a good website that resizes pics pretty quickly and pretty well if you don't have any fancy software or you don't want to mess with any software. Warning: I haven't tested it on any droids yet but it does get the image down to the required size according to the image properties so I assume it works, anyone can give it a try and let us all know otherwise, but on paper it looks good.
Free Online Picture Resizer - Crop and Resize photos, images, or pictures online for FREE!
step 1. upload the pic, hit continue
step 2. drop down to part 2 and choose custom setting radio
step 3. choose width 960 and pixels and then height 854 and pixels (or vice versa depending upon the image)
step 4. drop down to the bottom and hit resize
step 5. save image to where you can find it and upload to your droid!!