looking for some libraries

[Vision]

hi all,
I am doing some stuffs with some software, which has similar layout
like this:
Editbox________1
Editbox________2
Editbox________3
       _OK_
_______________
|        output        |
|        output        |
|        output        |
|        output        |
|        output        |
--------------------------
What I need to do is to fill the edit boxes, then press the OK button,
then I will get some output text below.
This is tedious since I have lots of entries to deal with.
So I am trying to write some scripts to handle this. And I wonder if
there is any library available for me to simplify the process?
Thanks!