Make sure you have reshacker, and paint or Graphics Gale or another graphics editing program.

Open reshacker> click file>click open>click your eozipped folder>click Gfxs. Where it says Files of type click the arrow, and click All Files so the gfxs show. Open the gfx file you want to edit. For this tutorial I will use gfx 3 as an example, which is the Tiles gfx.

Once you open gfx 3, click the + by Bitmap. Before you continue you will want all your edited files to be organized, so right click anywhere on desktop>click new>click folder, and save that folder as Tile Bitmaps. Now that you have the folder that your going to save your tile bitmaps too, pick any tile from the gfx 3 file. Right click the bitmap you want to edit, then click save{Bitmap : 101 : 0}... Save it to your Tile Bitmaps folder. Save it as 101-Tiles-3. 101 is the bitmap you are editing,Tiles is the gfx you are editing, and 3 means it's located in gfx 3. This is the best possible way to stay organized, so you don't forget what goes where and so everything stays in order. Now open your graphics editor (paint or graphics gale or what ever you have, and edit that tile in their. To replace the original tile with your edited tile, open reshacker, and go to your gfx 3 file. Right click bitmap 101, then click Replace resource.. Then click Open file with new Bitmap... and click your Tile Bitmap folder. Select 101-Tiles-3 and clickopen. Then click replace, and click save or press ctrl+ s. If you look in your endless online gfx folder, you will notice there is an original copy of gfx 3. Move gfx 3 original to a new folder, but do not delete it because you may need it in case you screw somethingup.

Here is a list of what every gfx contains;

Endless Online Gfxs Gfx 1= Main Gfx 2= Main Gfx 3= Tiles Gfx 4= Objects Gfx 5= Overlay Gfx 6= L/R Walls Gfx 7= Tops Gfx 8= Characters Gfx 9= Hair Styles/M Gfx 10= Hair Styles/F Gfx 11= Boots Gfx 12= Boots Gfx 13= Armors/M Gfx 14= Armors/F Gfx 15= Hats Gfx 16= Hats Gfx 17= Weapons Gfx 18= Weapons Gfx 19= Shields Gfx 20= Shields Gfx 21= Npcs Gfx 22= Shadows Gfx 23= Inventory/paperdoll views Gfx 24= Potion-spec/Spell Gfx 25= Spell Symbols