I really like the Bible-based spelling lessons I found for free on the Internet.  My oldest daughter spells very phonetically... you know... fonetikly.  :-)  But for some reason, this spelling has helped her.  It's not fancy, but I like how it combines dictation with old-fashioned review.  I also like how it has her spelling conjugated verbs, as that's hard for her, too. 

So if this helps any other struggling spellers out there, I'll be thrilled!
~Anne