In order to see the throttling and temperatures in BoincTasks check the following.
In TThrottle:
Open the dialog and go to the tab preference and check Enable BoincTasks.
In BoincTasks:
In the menu, open Extra->Settings. In the general tab, check Connect to TThrottle
In the same dialog, in the Tasks tab, at the end there are 2 Columns set to hide. Change these into throttle and temperature. To apply these changes press Apply.
As of TThrottle 5.00 and BoincTasks 1.19 it is possible to set a TThrottle/BoincTasks password. The passwords in both programs must be empty (not secure) or identical.
http://www.efmer.eu/boinc/boinc_tasks/manual.html (http://www.efmer.eu/boinc/boinc_tasks/manual.html)