you need to start the beagle deamon with:
beagled
There is not a kde gui for begle in the repos so you need to build it from source. Its called Kerry and available from:
http://kde-apps.org/content/show.php?content=36832
this will then act as a gui for beagle
I have it built already for etch if you want it, don't know if it will work with sid, it should do as they both have the same version of Kde. If you want ti drop me a message.