What friend ? : o (**** that smiley icons : o is not

è_é)
In fact that was just a joke huh, that is indeed UT2004 UnrealEd but I just modified the screen with one I made IG (The place where I took this screenshot is on a montain that was accessible on retail a while ago at least)
But well, it's the goal of what we should/would have to add content to rappelz ^^ But this would need at least to read/write model files correctly, and I am working on that.
If indeed I do a map editor like UnreadEd (with far less feature, for those who don't know Unreal Engine, it's a commercial feature-complete game engine.) i would use something like Ogre or blender + BTRF reader + terrain reader. That should help with 3d things. And add fieldprop and a property panel. But having a map editor like that will require many files to be there ... (if not the complete game). At least, I can reuse what I have done for BTRF & RDB (BTRF still need some work though)
Using the real UnreadEd to import rappelz's map is not possible as Unreal's maps contain more than just vertices and polygon, it contains also BSP tree, light information, path (for bots), and probably far more. These does not exist in rappelz, and the map format of Unreal is not known it seems (because UnrealEd is complete enough and there is no need to create something that deals with unreal maps)
So maybe one day we will have that program which is far more than just a tool (but for now, work has to be done to get this rappelz level editor)