Opening a specific page of a PDF document: The "Start" command allows me to open up a PDF document. Is there a way to display a specific page immediately when the document is opened?
Yes, this is possible, but you have to call up Acrobat Reader and pass the PDF document and page number as parameters. Example:

 Start "C:\Program Files (x86)\Adobe\Reader 10.0\Reader\Acrord32.exe" parameters="/A page=10 C:\temp\abc.pdf"

Instead of C:\Program Files (x86) you can use a Windows environment variable:

Start "&%[programfiles]

\Adobe\Reader 10.0\Reader\Acrord32.exe" parameters="/A page=10 C:\temp\abc.pdf"