IconXP
Aha-soft IconXP allows you to edit icons and customize the Windows desktop appearance. It supports the new icon format introduced in Windows XP (employs smooth transparency and other visual effects). Using this program you can create and edit icons in either standard or custom sizes, with color... xbm, . ... wbmp and Adobe Photoshop . ... xpm, . ... png, . ... gif, . ... psd file formats. ... You can import images from screen captures. ... You can also hide or change shortcut overlays. ... There are also commands that change the desktop icons size and color resolution, and rebuild the icon...
http://www.aha-soft.com/iconxp/iconxp.zip - 874Kb - Download - Screenshot

ArtIcons
ArtIcons provides great opportunities for working with Windows XP and Windows Vista icons. You will be able to handle Vista Icons with ease. In order to make Vista icons compatible with Windows XP you can save them without any compression. Vista Icons introduce a new style of iconography that... Aha-Soft has again found a way to cast off these shackles: ArtIcons uses advanced PNG compression to save images without losses and supports semitransparent images with 8bit alpha channel. ... All you need is just to redesign your program?
http://www.aha-soft.com/articons/aicon.zip - 2Mb - Download - Screenshot

ArtIcons Pro
ArtIcons Pro provides great opportunities for working with Windows XP and Windows Vista icons. You will be able to handle Vista Icons with ease. In order to make Vista icons compatible with Windows XP you can save them without any compression. Vista Icons introduce a new style of iconography... Aha-Soft has again found a way to cast off these shackles: Articons Pro uses advanced PNG compression to save images without losses and supports semitransparent images with 8bit alpha channel. ... That technology reduces the size of an icon only, leaving the quality invariable.
http://www.aha-soft.com/articons/aipro.zip - 2Mb - Download - Screenshot