Adobe ACROBAT READER 4.0 - MANUAL 2 Manual page 50

Adobe® Acrobat® Reader 4.0
Page 50
If an embedded PDF file is not configured to open in a separate window, you
can interact with the file in a browser compatible with Internet Explorer, but
not one compatible with Netscape Navigator. For example, links would not be
active in a PDF file displayed embedded in HTML in Netscape Navigator, but
they would be active in Internet Explorer.
Setting up Acrobat Reader as a helper application
If your Web browser does not display PDF documents in the browser window,
or if you prefer not to view PDF documents in the Web browser, you can set up
Acrobat Reader as a helper application in your browser's preferences. Then,
when you view a PDF document on the Web, Acrobat Reader will start and
display the document. When Acrobat Reader works as a helper application, you
cannot use page-at-a-time downloading, form submittal in a browser, or search
highlighting on the Web, and you cannot view embedded PDF documents.
To set up your Web browser to recognize PDF files, you must define a MIME
type and a file type. The file type should be pdf. The MIME type should be
application/pdf. See your browser's documentation for information on
configuring it.
If you are using Netscape Navigator 2.0 or later with Windows or Mac OS, and if
you want to use Acrobat Reader as a helper application, rename the PDFViewer
plug-in or delete it from the Netscape plug-in folder. The plug-in is named
nppdf32.dll (Windows) or PDFViewer (Mac OS).