Microsoft has a few new XP PowerToys. Here are a few of the more useful downloads. Others like Open Command Window Here and Webcam Timershot may be very handy, but that is more personal preference.

• ClearType Tuner - Tweaks the onscreen fonts to help them display better. The before and after difference is quite remarkable.
  
  
• Tweak UI - This utility has been around forever, however, it is still the ultimate customization tool. It provides many tweaks that would otherwise require some creative registry editing.
  
  
• Html Slide Show Wizard - Creates delightful HTML slideshows with smooth transitions. However, many of the delightful features only appear in Internet Explorer.
  
  
• Power Calculator - A decent, free graphing utility is something that Windows has never had. This is an excellent addition for anyone that deals with basic graphing, trig, or logs on a regular basis.
  
  That being said, my true recommendation goes to Virtual TI. It is a fully useable version of your handy TI graphing calculator of choice. Nothing beats an '89.
  
  
• Image Resizer - I'm not one for cluttering up my context menus, but this is a quick and easy way to resize an image. Either select one of the defaults or enter your own custom size. Set the largest dimensions you can tolerate and the utility will shrink the image to fit within that box with the original aspect ratios. It creates a copy of the original with the new dimensions.
  

I very highly recommend the ClearType Tuner and the Image Resizer. As I said before, the others entirely subject to personal preference. Link