First execution: 'maven is not recognized..'

[David]

Dear members,
   
  I have receantly downloaded maven from: 
   
  http://maven.apache.org/
   
  in order to build the acegi project 
(http://acegisecurity.sourceforge.net/nightly/)
   
  I get the following error with the maven invokation:
   
  set MAVEN_OPTS=-Xmx768m -XX:MaxPermSize=512m
call maven -Dmaven.jar.override=on -Dmaven.jar.clover-ant=1.3.3_01 clean
   
  I get the following output:
   
  'maven' is not recognized as an internal or external command,
operable program or batch file.
   
  so, why maven command is not recognized? (It works for mvn --version, so it 
is not a path problem), I have checked that with the command: mvn it works. So 
maven is for maven 1.0 and mvn is for 2.0 is that true?, so do I have to 
install an old maven version in order to build this project?
   
  Even using mvn I have still problems with multiproject plugins.
   
  ---
[INFO] The plugin 'org.apache.maven.plugins:maven-multiproject-plugin' does not
exist or no valid version could be found
[INFO] -------------------------------------------------------------------------
   
  so, the maven-multiproject-plugin is no installed. Reading about this plugin 
it is an 1.x Maven pluging. What I have to do in order to build acegi with my 
current maven version?
   
  Thanks in advance,
   
  David

                
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