I haven't made the full Linus switch for several reasons (iPod bein one of them) but I am an avid user of free alternatives to Microsoft products (Mozilla Firefox, Thunderbird, etc.) but I have yet to find a free application that emcompasses the utility of Microsoft's Outlook. Are there any free, Windows compatible, alternatives out there? My needs are the three basics - email, calendar, and to do list. Beyond that is gravy in my book.