From NSIS Wiki
|Author: saivert (talk, contrib)|
Plug-in: wansis.7z (332 Kb)
Source: wansis-source.7z (98.5 Kb)
Extra skin: wansis_steam_theme.7z (60 Kb)
Extra skin: new_theme.7z (73 Kb)
Also, you may take a look at NSIS_SkinCrafter_Plugin plug-in and its nice Skin Gallery.
This plug-in allows you to customize the overall appearance of the installer by using parts of Winamp skins.
How to use
The archive includes a nice readme which will help you along. You can also visit the wansis forum.