There are a lot freeware graphics editors to choose from. Some are more suitable than others but I don't know of any that contain viruses. Pixia & The GIMP are two popular programs with the advanced features you need for repainting aircraft textures. You will also need DXTBmp to convert textures to & from an FS texture format.
Last edited by Hagar on Mon May 28, 2007 3:15 am, edited 1 time in total.