I wasn't kidding that Google Apps doesn't work! Here's the video I just did of trying to get some data stored in their spreadsheet online.
Or the URL is here.
Lotus Symphony, sure isn't office, but I've been using it since January with no issues. Free is good, imagine your budget gaining back all that licensing cash you been giving Microsoft every year. Go get it now.
Happy to recant this if Google or anyone else explains how to do this at all.