You seriously need to post your inventory so we know what you've done in the game. In a forum where spoilers are deleted, you have to post your inventory so we can effectively give you useful hints.

Okay, I had to re-order your questions to put them in chronological order...

> And somewhere else, there's all tall white tower. It has no door..and when you click the option "Enter the tower", it gives you a bunch of passwords to say. None of them work. How do you get in?

*deep breath*

Um, you need to have gone all through the forest, killed the wood sprite, orc, taken a boat ride, bribed a sorcerer... in short, you're skipping too far ahead. Focus on the cat. And giving that soothsayer gold.

> How do you get into the fortress behind the wall? You know..the fotress you have to say "Tootle Cakes" for..bleh..I can't get in!
>

That's jumping WAY ahead. Near the end of the game.

> And..
>
> In the garden, what are you supposed to do to the cat? Is it just there to do nothing, or do you have to kill it?

Okay, here we go, this I can work with.

Well, you've got to get past the cat SOMEHOW, but you need some help first.

> I read somewhere that there's a bunny somewhere that will help you, but I can't seem to find it..
>

Try going in a different direction from the store. You can't find the bunny, then that means you haven't even seen the edge of the forest, which is a major chunk of the game.

Bribe him with a veggie treat and then go back and face the cat again. The bunny will come help, but you're going to have to buy him a second to get there...

-Mandi "Stall! Stall! Stall!" aka Chaos