There are several differences that we often find between good spellers and weak spellers. One of these is the ability to visualise words. Ask a good speller the spelling of a word and you will probably see them look away from you and 'read' the word. Often people look up and to their left as they do this. They may be able to 'see' the word projected onto a wall or surface there.
Ask a weak speller and they'll probably just look worried!
Here is a (very old) video of a (very young) Tony Buzan talking about just this.
(Note: I've got the video to start in the right place but for some reason not finish where I want it to. If anyone can tell me how to do this I'd be grateful. I suggest finishing at 3.17. In fact the video freezes at 3.46 anyway)
So to help weak spellers, we need to help them to 'see' words too.
Some techniques for doing this coming soon.
Thanks, by the way, to Tim Kenning for the video link.
Oh and ... a very happy 2010 to you all.