I am getting ready to upgrade my systems from 10.4.1 to the newest version of 10.5, and one of the questions the users have asked me was filtering a discovery. I have seen some information in the white papers, but not exactly what I was looking for and the online demo doesn't show me the values I can filter on. In short, can anyone tell me if during a discovery of servers (for example) can I exclude drives? I don't want a bunch of CD and Floppy drives populating my database and using elements up.
Please do not tease me about having machines with floppy drives, I inherited them. 
Thanks!