Windows Toolbar Icons with more than twenty royalty-free toolbar icons
Professional Icon Set lets you spice up your soft or websites with fine icons
Free
20x20 Free Toolbar Icons pack will instantly refine your toolbar
Vista Style Weather Icons Set - best choice for the weather-related applications
Vista Style Halloween Pumpkin Emoticons in nine sizes from 16x16 to 512x512
Vista Style Networking Icons for Network Applications
Lots of money related icons to enhance an interface of a business application
