> So you split it into chunks and download the bits you need as you go.
at last, the renaissance of the microcomputer programmers (like the COBOL renaissance of the mainframe programmers)! that kind of technique was common back in the 80s to get things done
That's funny - I stopped using Microsoft Office because of that very thing. I have Office '07 still for some minor graphical compatibility reasons, but generally speaking I use the bundled, free, offline, WordPad/NotePad, LibreOffice, and/or AbiWord.
So you split it into chunks and download the bits you need as you go.
Microsoft has already figured out how to do this -- you can run Office (the real, full Windows version) basically streaming from the Internet already.