I'm looking to perform Microsoft Word automation -- straightforward stuff such as instructing Word to open a document and save it as an RTF file. But what happens if the user already has the document open in a running instance of Word? Can I still safely perform automation actions (that don't modify the document itself), or am I asking for trouble? Will this interfere with the user working on the open document? Are there any alternative ways to accomplish the same thing?
I'm only interested in Word 2003 and later (but also about the Word for the Mac, as this will eventually be a cross-platform application).