[HELP]How do i change the spellbook icons in a 317/377 client?[HELP]

[mattmann]

How do i change the spellbook icons in a 317/377 client (idk which version)?
All i know is that i need to do some editing in the class30_sub2_sub1_sub1.java file
and i need some sprites in the sprites folder, i have the directory correct, all the sprites i need made. file names correct,

This is the current code i have, if anything is incorrect, please give me the correct code and not just where to fix, cuz idk what u mite me talking about:

if (s.equalsIgnoreCase("MAGICOFF1") &&
 ((i == 1) || (i == 2) || (i == 3) || (i == 4) || (i == 5) || (i == 6) || (i == 7) || (i == 8) || (i == 9) || (i == 10) || (i == 11) || (i == 12) || (i == 13) || (i == 14) || (i == 15) || (i == 16) || (i == 17) || (i == 18) || (i == 19) || (i == 20) || (i == 21) || (i == 22) || (i == 23) || (i == 24) || (i == 25) || (i == 26) || (i == 27) || (i == 28) || (i == 29) || (i == 30) || (i == 31) || (i == 32) || (i == 33) || (i == 34) || (i == 35) || (i == 36) || (i == 37) || (i == 38) || (i == 39) || (i == 40) || (i == 41) || (i == 42) || (i == 43) || (i == 44) || (i == 45) || (i == 46) || (i == 47) || (i == 48) || (i == 49) || (i == 50) || (i == 51) || (i == 52) || (i == 53) || (i == 54) || (i == 55) || (i == 56) || (i == 57) || (i == 58) || (i == 59) || (i == 60))) { 
try
{
                Image image = Toolkit.getDefaultToolkit().getImage("sprites/"+i+".png");    
                anIntArray1439 = new int[anInt1440 * anInt1441];
                PixelGrabber pixelgrabber = new PixelGrabber(image, 0, 0, anInt1440, anInt1441, anIntArray1439, 0, anInt1440);
                pixelgrabber.grabPixels();
            }
            catch (Exception exception)
            {
                System.out.println(((Object) (exception)));
        }

I followed a tutorial in the following link:

http://www.runelocus.com/forums/showthread.php?t=22948

there was one part i couldnt understand, the part where it says in italics anti-leech
i didnt quite get it. so, if its possible to do what i want done how do i do it CORRECTLY? do i need to edit anything in my server folder? or any other java files?

any help is welcome, if i have anything in the wrong section, please dont state the obvious. the mods will fix that. also, if you dont know, please dont post.

[MentaL]