The latest Technet newsletter has an interesting article which features 77 short tips for those upgrading to Windows 7. For the casual user, it gives a good guide to some of the interesting things you can do in Windows 7 that you may not have known about:
http://technet.microsoft.com/en-us/magazine/2009.10.77windows.aspx
You can read the full list here:1. Pick Your Edition. Most business users do not need the more expensive Ultimate Edition; stick with Professional unless you specifically need BitLocker.
2. Upgrading? Go 64-bit. As the second major Windows release to fully support 64-bit, the x64 architecture has definitely arrived on the desktop. Don't buy new 32-bit hardware unless it's a netbook.
3. Use Windows XP Mode. Yes, it's only an embedded Virtual PC with a full copy of WinXP—but it's an embedded Virtual PC with a full copy of Windows XP! This is the first profoundly intelligent use of desktop virtualization we've seen—and a great way to move to Windows 7 without giving up full Windows XP compatibility.
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http://technet.microsoft.com/en-us/magazine/2009.10.77windows.aspx