Installed Eclipse 3.2, Subclipse, and Eclipse Plugin for RadRails. You must install the RDT before installing RadRails, So grab this first http://updatesite.rubypeople.org/release and then this http://radrails.sourceforge.net/update
Otherwise you will get error message that the dependent library is not found.
The new version of standalone RadRails 0.7 is just out. I think it will be available for download anytime.
I don't know how to get rid of the missing JavaHL library in standalone RadRails. This prevented me from configuring the Subversion. This problem is happening in the other configuration also.
Got some help from Rails mailing list. Select the JavaSVN (Pure Java) as the SVN interface. The error message disappeared.