You need the following,
1. WinRAR To open the file DO NOT USE 7-Zip this is a WINRAR FILE!
2. Window Blinds for the visual style and others
3. Styler It's something that lets you edit the styles color.
Instructions: Download the file, click Gem theme, then click the Windows theme file.
Might come with wallpaper. I CAN'T help you with any problems maybe others can.
Clock and other things: Yahoo Widgets