I downloaded and ran the iFilter PDF Handler's (32 Bit v. 6 and 64 bit v 9.0) but no .pdf handlers are showing in the list and it does not search in PDFs. I uninstalled Fileseek Pro and reinstalled. Same thing.

I suspect that it's because I have Adobe 11 Handlers installed.

What can I do?

NM. Fixed it. I uninstalled FileSeek, Adobe iFilter 11, and Tracker PDFXVwer. Restarted. Installed iFilter 6.0, iFilter 9.0, FileSeek. Then, in the Advanced tab, I checked [ ] Process file contents using File Handlers. And it worked.