As you know its not easy resizing gif images in Photoshop cs 3 or imageready. When we try to resize gif animation images , most of the existing image resizing softwares always output a static image which is the first frame of the animation. Here is a software called GiF Resizer which gives you a easy choice of resizing gif images without destroying the animation information and settings. And the GiF Resizer is freeware, you don’t need to buy it.
download the software from here