How to Register a PDF.OCX

1. Locate the PDF.OCX file. It should be in the '\Reader\ActiveX' subdirectory of your Acrobat installation (usually a subdirectory of 'C:\Program Files\Adobe'). If you can't find it there, or if you don't know where Acrobat is installed, click 'Start,' then 'Search,' then 'All Files and Folders,' and search for 'PDF.OCX.'
2. Unregister the file in case it is already in the registry but corrupted or broken. Click 'Start,' then 'Run.' Type:REGSVR32 /U 'PATH\PDF.OCX'where 'PATH' is the path to the PDF.OCX file you discovered in step 1. Click 'OK.'
3. Reregister the file. Returning to the 'Run' dialog, type:REGSVR32 'PATH\PDF.OCX'where 'PATH' is, again, the path to the PDF.OCX file. Click 'OK.'