Microsoft PowerToys for Windows XP
http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp

Open Command Window Here
This PowerToy adds an "Open Command Window Here" context menu option on file
system folders, giving you a quick way to open a command window (cmd.exe)
pointing at the selected folder.

Alt-Tab Replacement
With this PowerToy, in addition to seeing the icon of the application window
you are switching to, you will also see a preview of the page. This helps
particularly when multiple sessions of an application are open.

Tweak UI
This PowerToy gives you access to system settings that are not exposed in the
Windows XP default user interface, including mouse settings, Explorer settings,
taskbar settings, and more.

Power Calculator
With this PowerToy you can graph and evaluate functions as well as perform many
different types of conversions.

Image Resizer
This PowerToy enables you to resize one or many image files with a right-click.

CD Slide Show Generator
With this PowerToy you can view images burned to a CD as a slide show. The
Generator works downlevel on Windows 9x machines as well.

Virtual Desktop Manager
Manage up to four desktops from the Windows taskbar with this PowerToy.

Taskbar Magnifier
Use this PowerToy to magnify part of the screen from the taskbar.

HTML Slide Show Wizard
This wizard helps you create an HTML slide show of your digital pictures, ready
to place on your Web site.

Webcam Timershot
This PowerToy lets you take pictures at specified time intervals from a Webcam
connected to your computer and save them to a location that you designate.