Can someone help me how to set the classpath for maven on windows 7
===

I am trying to set the class path on win 7 and after doing all the necessary variables when I try to execute mvn --version I am getting this error -"mvn is not recognized" 
In system variable I have set M2_HOME and the value is set to --- C:\Users\Amzi\Desktop\apache-maven-3.0.4-bin
in to the path variable at the end I have set the value like
;C:\Users\Amzi\Desktop\apache-maven-3.0.4-bin\bin
can someone help me what I am doing wrong here. Thanks