Spell CheckerAt the moment there is not a reliable spell checker that you can have on your forum, however there is away around this.
ieSpell Is A Spell Checker for Internet Explorer,
it is not spyware or adware. It is free for personal use only.
This little beauty sits on your address bar as a little abc sign and thats is that, just click on it after you have typed your post and it will check the spelling for you.
You can download ieSpell from HERE