This is probably a faq, but I sure don't see it.
I've been trying for a week to install the IDE into Eclipse 3.0.1. I go through the update process as described in the doc and select JBoss-IDE 1.4.0. The download seems to kick off ok, but fails at varying places in the process with a message like:
Unable to complete action for feature "JBoss-IDE" due to errors.
Unable to retrieve remote reference "http://jboss.sourceforge.net/jbosside/updates/plugins/org.jboss.ide.eclipse.jdt.ws.core_1.4.0.jar". [Connection timed out: connect]
it's sf.net which can't handle the load ;(
You can download it as via
http://sourceforge.net/project/showfiles.php?group_id=22866&package_id=72248
and then unzip it into your favorite plugins directory.