Installation:
 1. Install the SLucida Grande font (included)
 2. Copy iChat.msf and the iChat folder in a folder/subfolder of the skins directory in the miranda program folder.
 3. Make sure iChat.msf and the iChat folder are in the same directory
 4. Get clist_modern.dll (should come installed with the latest nightly)
 5. Activate clist_modern (if you are using another contact list)
 6. Go to Options > Customize > Skin and select iChat

Extras
 --- Item Order ---
 In order to get the contact list look like the iChat one, open Options > Row Items and set the rows like this :
 1. Icon
 2. Text
 3. Extra icons
 4. Contact Time
 5. Avatar
 Min row height : 16
 Row border : 3
 Left/Right Margin 2
 --- Customizing Avatar ---
 In order to change the avatar icon above the contact list, navigate to the skin images folder, and paste your 28x28 image in the iAvatar.jpg image

Special thanks to Zorda for providing me with resources.