Update: There is now a final version of JBoss Tools for Helios! No need to use the nightly builds unless you want to live on the bleeding edge!
For those who are trying to run JBoss Tools on Eclipse 3.6 aka Helios then we are working on getting a M1 build out, but for those
eager to use Helios the nightly builds can help you.
We recommend you use the update site over any of the separate standalone zip builds, thus either use the updatesite (http://download.jboss.org/jbosstools/updates/nightly/trunk/) or the update site zip from the nightly zip builds.
Don't forget to let us know if you find something not working as you expect. You can do so in our jira
or discuss them in the forums