One thing that always springs to mind is that you need to be set up for your appropriate country otherwise we Brits could end up with Americanised spellings. That's rule number 1. Now for an example of a good spell checker produced here by Martha Snow...
Eye halve a spelling chequer
It came with my pea sea
It plainly marques four my revue
Miss steaks eye kin knot sea.Eye strike a quay and type a word
And weight four it two say
Weather eye am wrong oar write
It shows me strait a weigh.As soon as a mist ache is maid
It nose bee fore two long
And eye can put the error rite
It's rare lea ever wrong.Eye have run this poem threw it
I am shore your pleased two no
It's letter perfect awl the weigh
My chequer tolled me sew.Hope that explains everything, haha..Dave
