Maybe to you things like this are helpful:
But generally, if you want to get help, providing more info is sure to get you more help.
Im going to take a guess and say you didn't turn over the destination tab in heidisql and notice that you should select spells_new as the table to import into(you can also highlight it before you import).
Make sure if you export your own spellfile that you delete the first line from it(it exports the headers as well), probably an option to not export those but Im lazy.