3.Upgrade Calculator and Paint; Get PowerShell:

Windows 7 brings with it a few key upgrades to the ancilary programs it bundles, like calculator, paint, and WordPad. While you can't get the new Office 2007 ribbon in your WordPad right now, if you're a Paint User do consider upgrading to the free Paint.NET, which supports layers, multiple open images, and much more than regular Paint ever dreamed.
To get you some powered-up Calculator action, XP users can install Power Calculator, and vista users can done their eye patch and try getting this version of the Win7 Calculator to run on their system. Finally, Windows 7 comes with PowerShell pre-installed, but you can download and install PowerShell yourself right here.