This is guide, howto install plugins on Eclipse 3.6 SDK. This guide shows howto install PDT (PHP Development Tools), CDT (C/C++ Development Tooling), Javascript Development Tools, Ruby Development Tools (including Ruby on Rails framework) and Eclipse MarketPlace. This guide shows PDT, JavaScript, CDT, Ruby and MarketPlace install as an example, but same methods can be used for installing anything from Helios Repository. Install PDT, JavaScript, CDT, Ruby and MarketPlace Plugins on Eclipse 3.