I shall be able to give my daughter her 2007 back now. But, another but . . .
Darn disc was faulty. MS phoned me back after half an hour and a nice man in the Philippines took control of my PC and finally downloaded a new copy.
He said get your disc replaced when you can. Such a waste of time insisting on the real thing - could've done that in the first place.
2010 Word, Excel etc., runs, so it will remain to be seen how tightly they police my cavorting about the globe.