Capture a value from the response

Hi,

I am new to this SOAP UI tool. I had a question regarding the correlation.
In this post they want to validate a value (12). That is fine.

But if i want to capture a dynamic value from the response then how should i proceed in this aspect.

For ex if i am searching a book (for java) in the website. I will get the details of that book. But if i want to search a 'C' book the details will differ (like author, book name, publicaiton etc). Depending on the user input value the page is differing.

So now please tell me how can i capture the author, bookname, publication such that for the respective input i should get the relevant page of that input.

Please do the needful.
Thanks in advance.

Thanks
ahsu