Are you sure its possible? I remember two years ago when I was uploading a Halo 2 Mod and I tried compressing a .rar into another .rar and it didn't work.
Alright hows this: http://img75.imageshack.us/img75/5779/datanni.jpg [img=http://img75.imageshack.us/img75/5779/datanni.jpg] It looks like shit to me, if you like it you can use but I don't really care.