There are 2 pints in 1 quart, so there will be 3 pints in 1 and 1/2 quarts.
Hi Niki, I understand that Windows Reader is the default Viewer for PDF files. What I was asking was how this was stored in the registry. The key HKEY_CLASSES_ROOT\.pdf key has (Default) = AcroExch.Document (if you have Acrobat Reader installed). In Windows 8 the .pdf key has (Default) =  (blank).
The Windows Registry is a hierarchical database for storing many kinds of system and application settings. Prior to the Registry, .ini files in the form of text files were commonly used for storing these settings. However, these files were unable to meet all the requirements of a modern application.