Password Script

Hi everyone! I'm looking to code a script that does the following. Please bear with me as I'm a total novice at this ^^! It's sort of like a multiple password thing. Users need to type in between 3 and 6 (I will be changing the use of this script and sometimes there will only be 3 answers sometimes as many as 6) things. If they get it right they'll be redirected to a page, if they get it wrong either a javascript prompt will popup saying "Incorrect" or they'll be redirected to a different page. I'm not sure if I'll put a limit on how many times they can guess, so if you could tell me how I would put a limit (say 10 guesses a day) I'd be greatful. Thank you! Please try and make your replies detailed so I can understand them ^_~ -Vicky