Just a note on your "item 1":

"Page Numbers" per se, DO NOT EXIST in MSWord documents. They are auto computed EVERY time a document is opened and/or the default printer and/or any styles change.

A document can have different pagination on different computers due to the above issues.

See Word's Numbering Explained.

Otherwise you just need to spend some time with:

1. a VBA book,
2. the Object Models of the various OLE enabled programs (see their help files/manuals), and
3. the POD for Win32::OLE (to help translate VBA code to perl).

Good luck %^)