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I would like to take part of the new Orion Eclipse Plugin.
Orion isn't an eclipse plugin - it's a new web-based tooling platform. For more information see: http://wiki.eclipse.org/Orion I'm not sure what you mean by "take part of".. Orion can be downloaded - see the above wiki page for the link.
Another option would be to sign up for the public beta at http://www.eclipse.org/orion
Please let us know if neither of the mentioned options (download, or public beta) are what you were looking for.