I was mucking about and found that tiles are TGA so I edited one and saved it as tile...text175 i think in the third tile set (thats the egyption one) but it doesn't show up is it posible to create a custom tile or not
If you change the tgas in tile03 you can find them in tileset 2 in the editor. Note that Gish might only support some tgas like BCS, so if nothing appears anywhere experiment with the settings of the program you use to create the tga.