Just gave a quick Google and came up with:
http://www.download.com/Ulead-GIF-An...4-5422267.html
and
http://www.freewareweb.com/cgi-bin/archive.cgi?ID=288
Not familiar with either of them though. I used to use an add-on to Paint Shop Pro in the past (I think)
It's just a matter of getting the image and coming up with a sequence of pictures, example one with the eyes looking to the left, one to the middle and one to the right. The package will do the rest
Here's more instructions how to do it:
http://www.google.co.uk/search?q=ani...ient=firefox-a