Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\system32>"C:\Program Files (x86)\Java\jre6\bin\java.exe" -Xms512m -Xm
x1024m -cp "%APPDATA\.minecraft\bin\*" -Djava.library.path="%APPDATA%\.minecraft
\bin\natives" net.minecraft.client.Minecraft
Exception in thread "main" java.lang.NoClassDefFoundError: net/minecraft/client/
Minecraft
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: net.minecraft.client.Minecraft.  Program will exi
t.

C:\Windows\system32>