Sure,
the easiest way (especially if you've created the "GIF-animation" outside of the interface development...) is to create a placeholder (a simple image area the same size as the anim) and title it something like "inserthere" in ImageReady (if that is the App you are using to create the slices for your interface). Edit the code in any text editor from "inserthere" to tha actual name of the animation. Reload the page and there it be...

i'll try to so an example

BRB,
:)
retrocity