Where do I set maven.apserver.home?

I am trying to set up Turbine with Maven 1,  I have modified the 
build.properties in 
.maven/cache/maven-turbine-plugin-1.3-resources/flavor/common/maven
 to be
#maven.appserver.home =      @MAVEN_APPSERVER_HOME@
#maven.appserver.name =      @MAVEN_APPSERVER_NAME@
 maven.appserver.home=  E:/Program Files/Tomcat/apache-tomcat-6.0.26
 maven.appserver.name = Tomcat


yet I still get this failure  even after running  maven -g again.

E:\>maven -Dturbine.app.name=HelloWorld turbine:setup
 __  __
|  \/  |__ _Apache__ ___
| |\/| / _` \ V / -_) ' \  ~ intelligent projects ~
|_|  |_\__,_|\_/\___|_||_|  v. 1.1

WARNING: No pom file was found, assuming default settings!

build:start:

turbine:init:

turbine:setup:
turbine:init:

turbine:check-runtime-environment:
-------------------------------------------------------------------------------
 >> Unable to obtain goal [turbine:setup]
 >> 
--------------------------------------------------------------------------
| Plugin Configuration Error                                             |
--------------------------------------------------------------------------

 A required property is missing a value.

 Property name: maven.appserver.home

 Errors must be corrected before using this plugin.

--------------------------------------------------------------------------
-------------------------------------------------------------------------------
BUILD FAILED
-------------------------------------------------------------------------------
Total time   : 1 seconds
Finished at  : Friday, March 12, 2010 10:38:04 PM EST
Final Memory : 2M/5M
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