Hey thanks. I actually had first heard of Zoroaster in Friedrich Nietzsche's book, "Thus Spoke Zarathustra", and I have started taking an interest in older religions.
Thanks there, nice icon. If you are interested in Zoroaster, may I recommend this site? I have read it recently and found it interesting (it excludes much of the prejudicial rhetoric you typically find with religious criticism): http://www.askwhy.co.uk/judaism/0260IranGods.php
Happy Birthday.