I am in need of a good freeware photoshopping application and was recommended GIMP. However it requires that I install X11 (which I'm not sure what that is), but I have tried to install it and it fails, giving the message that a newer version already exists on my machine. Are there any solutions for this? Can anyone recommend any other good image editing applications? I'm trying to re-size (pixel, height, width, etc.) images as well as save them into different formats. Some editing and effects would also be great.