An interesting and usable set of animated icons, tastefully designed for display using Microangelo's 'On Display (available for 21 day trial or purchase at CNET downloads). This collection was produced for 256 colors and up in 32x32 pixel format...

Check out these royalty-free icon collections with over 175 icons and small graphics elements that come in all sizes - from 16x16 to 128x128, 8 to 32 bits. Most are WinXP icons with alpha-channel. It's what you need for your website or application.

TrayAccess is an utility that allows you to put in the system notification area ("system tray") icons for any programs, documents, folders, or system objects (for example, printers).