Today's featured PowerToys are:
Power Calculator [Download]
With this PowerToy you can graph, evaluate functions, and perform many different types of conversions. This is really a very versatile and powerful calculator. To access this utility, go under the 'Start menu|All Programs|PowerToys for Windows XP|Slide Show Wizard'.
Taskbar Magnifier [Download]
Magnifies part of the screen and displays it the taskbar. To access this tool right-click an empty area of the taskbar, and then select 'Toolbars > Taskbar Magnifier'.
Open Command Window Here [Download]
Adds an 'Open Command Window Here' context menu option on file system folders. This allows you to quickly open a command window at the location of the selected folder. To access this tool right-click a folder, and select 'Command Prompt Here'.