Has your wallpaper stayed the same since you bought your computer? Have a widescreen monitor with an ugly, stretched wallpaper on your desktop? Perhaps you would like to give your operating system a makeover with a new theme and new icons. If this sounds like you, then head over to InterfaceLIFT for an excellent collection of wallpapers, icons, and themes. They have absolutely beautiful high-resolution wallpapers for widescreen monitors and almost any resolution (even iPhone sized). Icons and themes are available for Mac OS X, Windows, and Linux so everyone is covered.

If you are on a Mac, be sure to check out InterfaceLIFT’s great widget (pictured above) to keep up with their latest content.

Customize.org takes us back all the way to 1998 when it was first founded. Its great collection of skins, themes, and wallpapers makes it one of the most well-known customizing websites on the web. Its creative community is currently 100,000 members strong. The site features a unique color palette tool that helps you keep a consistent color scheme across all of your skinned elements. If you’ve somehow missed this one, be sure to check it out.