Removing PDF Passwords

I have this PDF book that is split up into about 20 different pieces. I was attempting to combine them in Acrobat but discovered they had password protection. I have seen a few brute force crackers out there, but is there anything newer or easier? I am sure all it would take is flipping a bit or two from Password protected to not protected, but doing that is beyond my means.
Answer #1
google: “online pdf password remover”, I’m sure you will find something useful
Answer #2
Yeah, I have seen those, but I do not want to have to upload 20 PDFs and wait however long their server queue happenes to be at the time then wait for them to be sent back to me. Was hoping for some batch type app or a drag and drop type app. Yeah, I am lazy but that is what computers are for.
Answer #3
PDF Password Remover v3.12
http://www.verypdf.com/pwdremover/
http://www.verypdf.com/pwdremover/pwdremover.exe