I need somebody who is good at batch programming, i have several problems with it : So, i want to create a licensing system for with a batch file, because all the licensing system cost around 100-1200+ bucks. What the batch should do? When you start the batch, the cmd should open, there you insert the key, if the key is right, it should automatically unzip a .rar or an sfx(.exe) file with password! After that, I'll compile the .bat to .exe to secure it. This is what i got so far( of course not wokring): @echo off :choice set /P c=Insert Key if /I "%c%" EQU "123" goto :yes else goto :no if /I "%c%" EQU "321" goto :yes else goto :no if /I "%c%" EQU "132" goto :yes else goto :no :yes msg * well done pause exit :no exit If it could be possible, that when the code has been used once, or 2 times, it should be deleted.