I have installed
Google Plugin for Eclipse 3.6
Google Web Toolkit SDK 2.4.0
in my Eclipse-Helios-3.6 but cannot find the google plugin icon in my toolbar and also I'm able to find Google in Windows>>Preferences.
Operating system-Ubuntu
Do not use the pre-packaged Eclipse in Ubuntu (that version is often quite outdated). Get a current version from the Eclipse website instead and install it in a directory that you like (thereby avoiding problems with the Eclipse update mechanism, which doesn't fit the Linux directory guidelines very well).
Window
->Install/Update
-> click the linkUninstall or update
. – Igor Klimer