ImageReady CS2 help

Hello all, I took a look at the archives and I didn't see one that'd fit so I'm posting. If I missed it please let me know and feel free to delete this. I've been using PhotoshopCS2 for a while and I've got the hang of it. And I've made a few animated icons in ImageReady as well. I haven't used it in a while, but I went to make a very simple animated icon and it says I can't save it. It's only letting me save it as a .jpg, .png or .wbmp. I've looked through the settings and I didn't change anything. I've been fooling around with it but nothing works. Any ideas? Thanks!