If used both of the IEspell and the Google toolbar spell checker, and IMHO the Google checker blows the doors off of IEspell. Give it a try, it's worth it. I also like the fact that the Google toolbar is available for both IE and Firefox, because I use both it's nice to have the toolbar because they look and act exactly alike which means I don't have to learn two different spell checkers.

Hope this helps

Ken