SnIco edict is an icon editor. It supports several formats and allows an import from files jpg, png, gif, bmp, dll and even exe.
Besides, it also allows the cursors publication. It allows to export icons in default sizes i.e 16x16, 32x32 and 48x48, but it is possible to customize the sizes.
SnIco edict also supports animated icons. ANI with true colors as well as Windows XP alphablending.