Enable indexing of PDFs on your 64 bit Sharepoint Servers.
Adobe currently bundles a 32-bit PDF iFilter with Acrobat 8 and the free Adobe Reader 8. This uses the Microsoft iFilter interface and allows third party indexing tools to extract text from Adobe PDF files. However, currently this 32-bit PDF iFilter does not work on 64-bit systems.
In response to customer requests, Adobe is releasing this prerelease version of instructions and files which will allow a server administrator to configure the current 32-bit PDF iFilter to work on 64-bit systems, specifically Microsoft Office Sharepoint Server 2007 on Windows Server 2003 x64 Edition.