Search multiple PDF files

Hello,
I don't have/use Acrobat, but I have lots of pdf files that I have collected.
Many of them are books, History etc, that I would like to search.
Rather than searching individualy, I'm wondering if there is a Search tool (shareware or something) that will search all of the files at once ?

I'm sure there is; so my questions are these;
1) what is a good one, (good = simple yet robust, easy to set up maintain....)
2) are there any that will do text and text as image, OCR
3) needs to work across many vintages of pdf files

I'm on Vista, and use Reader v10

That option is available in Adobe Reader.

Open Adobe Reader and from the drop down arrow on the search box select 'Open Full Reader Search'.

From the new search window that opens you can search all the documents in a directory.

I'll try that again, but I don't think it's that straight forward.
It may do some/mant of them but not all, some that are older versions have issues with index lists, and of course some are text as image so those wouldn't
get searched......

Are there any methods for searching the text as image files via some sort of OCR ?