I cant create maven web application in netbeans 7.0

[haroonfoad]

I got this error after trying to create the project with maven 2.2.1:

Scanning for projects...
Searching repository for plugin with prefix: 'archetype'.
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BUILD FAILURE
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Required goal not found: archetype:generate in org.apache.maven.plugins:maven-archetype-plugin:1.0-alpha-7
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For more information, run Maven with the -e switch
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Total time: < 1 second
Finished at: Tue Apr 26 10:15:02 AST 2011
Final Memory: 1M/30M

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and with maven 3 I am getting this error:

Scanning for projects...
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BUILD FAILURE
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Total time: 0.900s
Finished at: Tue Apr 26 10:50:28 AST 2011
Final Memory: 3M/38M
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Could not find goal 'generate' in plugin org.apache.maven.plugins:maven-archetype-plugin:1.0-alpha-7 among available goals create-from-project, create -> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoNotFoundException