I need help making a client.

I'm new to all this "hacking" stuff. I want to make a client so I did this RABCDAsm, decompiled the .swf and all. now I am presented with stuff like "_-00e". Does anyone know a good tutorial with editing this. I have know idea where the stuff I want to edit is.

Most of them are completely useless for what you are trying to do. To get information about what .classes to edit, try looking into mod-selector's "mods" folder: all the .xmls have the file nane and line, while the .txts contains the actual code to past.