ibnzayyat & akronix, you need to use MP3 Player utilities 4.03 or 4.05 but the largest resolution you will get is 208x176 @ 10fps which can be a bit stuttered on fast moving scenes or directional panning. I found that 208x144 @ 12fps gives a more fluid conversion and suits wide screen video much better.
For best results it is best to pre-process your video through something like VirtualDub to resize and set frame rate to (12fps) to match your amv conversion prior to putting it through the AMV Converter.
I have uploaded a VirtualDub settings profile here if you want to give it a try.
http://www.sendspace.com/file/u5xmj0