I know there's a movie that was made with real people and all but the one I'm looking for is in cartoon I used of watching it when I was younger. What I could remember is that there was a young girl that was adopted by a mean women and she is locked in her room but one day a cat shows her a secret passage and there she ends up in a secret gaeden and meets a boy.
It would be very nice if someone here could show me were to find information on this movie or where to find the movie thank you :)

IMDb Search

Here is a list of the different versions.

It sounds like what you're talking about is The Princess and the Goblin.
But I know how you feel... I remember A Secret Garden in Toon verion...
Was the boy in a wheelchair?

I found it on Netflix...

Netflix: Rent as many movies as you want for only $8.99 a month! Free Trial

I remember it. (I actually have it on DVD. Walmart's bargain bin is a wonderful thing.)

Here's a couple of websites with a little information:

http://www.bcdb.com/cartoon_story/107148-Secret_Garden.html

http://www.imdb.com/title/tt0111105/

And if you wanted to buy it, you could probably find it on Amazon.com.