Get hold of existing instance of acrobat in C#

Hi All:

My requirement is to get hold of an already open instance of acrobat pro and read the content from the pdf in a C# windows application.

I am trying to achieve this using inter application communication but couldn't find way. I was wondering if I can get a sample of how can I do it.

everywhere I try to find, I just get an example of CreateObject("AcroExch.App") but I believe this creates an instance of Acrobat app where as I need to get hold of the already open app.

Help truly appreciated.

Thanks in advance.

Regards
Rahul