Cannot “Install New Software” in Eclipse 3.5

Question

I have just installed Eclipse 3.5 for Java EE developers (\"Galileo\").

I need to add an extra plugin, but when I select the \"Install New Software ...\" menu item,

Answer 1

I had the exact the same problem. What I found out is that I installed the eclipse as root user. Therefore, I need to be a root user in order to launch "Install New Software".