Recruit Selene quest guide has been updated.

GE User Interface Skins

To install a GE User Interface Skin...
  1. Copy clearbg.bmp, skin.bmp, skin.tga, and skin2.tga into Granado Espada\release\user\skin folder. Backup original first, if desired.
  2. Start GE client.
  3. At the splash screen, click Config button.
  4. Under User Interface, check Use the User Skin and Save.
Alternatively, you can open user.xml file in Granado Espada\release folder with Notepad, and edit the value of userskin from 0 to 1. This replaces steps 3-4 above.

Currently, I'm using Anz's First Skin. See GE UI Skin List for more skins.

Game Update v2.9
For v2.9 and above,
the user skin has been replaced with a new format, i.e. it no longer consists of only 4 files. So instead of copying those 4 files, copy ALL files in the skin pack into the folder specified above.