GALEFORCEWIND:
I couldnt agree more, nearly all the despatchers have calculators with them, so do the flight crew to make sure they have got the right figures but i must add that you do have to reasonable at maths, you cant escape that side of it.
For the first year or so, all figures and loadsheets etc etc will be done for you. Its not untill you are DCS trained that you will be doing it yourself.
I wish you the best of luck, probably one of the best jobs at the airport during summer, winter being not so nice...LOL
Good Luck
TJ747