How do you get to the second floor and unlock those weird doors that are locked in Nancy Drew The Mystery of the Clue Bender Society?

WARNING: In this answers there are alot of spoilers and its not possible to answer this question without the spoilers, so be prepared.

After you find the tome box, you bring it back to Mr.Wargrave. Mr.Wargrave opens it, only to find out that its missing. He tells all the canddidates for this contest to search the house, because it holds the greatest secrets in the world and cannot leave the estate. He gives you the key to the second floor when this happens. That's how you unlock the second floor doors. When you explore the second floor, you will see these things that look like ATMs. If you take a closer look at the ATM lokking things, you will see 4 familiar looking symbols, where have we seen those before.... oh yeh! We see them on Mrs.Lovedays weird looking doors. Go to any of those doors. You see that there are two rows of symbols with 4 symbols in each row. The first row of symbols- record this on a piece of paper, its like a passWord for those ATM looking things. Go to the ATM looking things and change the symbols to match the passWord you recorded. The thing is, there are 4 ATM looking things around this floor. Each one only changes one symbol. So go to all 4, change the symbol to match your passWord that you recorded. Once youve done that CORRECTLY, you will hear a noise, go to the door you recorded your passWord for and its open!