Edit quiz template navigation

I’ve created a quiz from one of dan carrs templates, it consists of about 40 questions. i’ve adapted it to my needs accordingly however there a couple of things that im wanting to do and im wondering if its possible without bothering dan himself!

The needs of the user are that of scrolling back and checking there answers, i have added in my own navigation so the user can simply scroll through each frame and also have created links at the bottom so the user can click the particular question they want and be taken to that frame. Basically im wondering if its possible to lock a question or frame completely once the question has been answered so not to answer a question twice and completely mess up the results.

I am used to php and have only rarely used flash in the past

any help will be great

thanks