If you don't know how to do something or are stumped with a task, ask for help. Maintaining an open line of communication is one of the most integral parts of operating in a professional environment. Whoever assigned it to you will be more than happy to explain what exactly needs to be done—because if you don't do it right, then they have to fix it. It's true how the saying goes—there's no such thing as stupid questions... just stupid people.