The Rico Toolkit runtime does not come shipped with the the Eclipse Rico plugins. The Rico toolkit must be download from the Rico site at http://openrico.org/ and configured to the ATF infrastructure. Download the Rico Toolkit and unzip the toolkit into a directory.
Open the ATF Preference page for defining Installed AJAX Runtimes, Select Window > Preferences... > ATF > Installed AJAX Runtimes
Click the "Add.." button to add a runtime.
Select the Rico Toolkit from the "Runtime Type" drop down menu. If the Rico runtime is not in the drop down menu, the base runtime plugins for that Rico haven't been installed into eclipse. Example implementations of different runtime plugins are available from the ATF site on eclipse (www.eclipse.org/atf).
Fill in the "New AJAX Runtime Instance"
Click the "OK" button. Make the newly define runtime the default version of the runtime used by ATF. Select the newly define runtime on the "Installed AJAX Runtimes" preference page and press the "Set as default" button. Multiple Rico runtimes can be defined and ATF will use the one that is set as default.