Radrails by default comes bundled as a pre-built package but you may not want to be restricted to its built in views. To transcend this problem means being able to use Aptana, Wickedshell
and other eclipse plugins without the need of opening multiple copy's of eclipse.
The most simple way of doing this is to download a copy of Eclipse Platform Runtime Binary.
Then you'll want to add RDT, Radrails, Aptana, Wickedshell and Subclipse through the menus.