hallofcostumes theme

Hi

i have cnfigured the blog in hungarian and i am using the hallofcostumes theme, the problem is in the menu of the theme i still c menu headings like main menu, categories , archives , users etc in english. I have edited the menu.php file to change the headings from english and replaced them with hungarian words but when i see it on the live blog i can only see english letters properly and the hungarian letters are converted to some symbols. can anyone tell me whats the problem is i guess wordpress is unicode complient so it shold work rite, but its not working so can anyone kindly tell me whats the solution for this ASAP

Thanks for the help in advance