The sample "Developing with Eclipse" requests to create a new package within a Maven project. Eclipse (Juno) rejects this with message "Source folder is not a Java project.". The only requirement from the sample is installation of "Maven Integration for Eclipse". Is there something else needed?
I started to use a maven-archetype described here: http://dev.day.com/docs/en/cq/current/core/how_to/how_to_use_the_vlttool/vlt-mavenplugin.h tml#multimodule-content-package-archetype
It creates a maven project with a CQ content package and an OSGI bundle, which is then integrated into the content package, so you only have to deploy that package via the packagemgr. If you have that directory structure, you can use the import function to import it as existing maven project.
(I have Indigo R2 and it works very well.)
At last I found it with the help of the m2e-forum. Maven needs internet connection to setup successfully. I also installed Maven native (beside the m2e-plugin) to my Windows 7. To supply the internet-connection, I maintained the $HOME/.m2/settings.xml according to http://maven.apache.org/guides/mini/guide-proxies.html. This solved it.
It should urgently be mentioned at the sample page.
Thank you for your help; it gave me a starting point for further research.