[itsm] search config items with links

Hi All, Under config item, I have defined two locations: Location A and Location B. I have also added some Computers. Some computers are laptops, some are desktops. Each computer is linked to a location. I would like to get a list of just laptops on location A. I would also like a listing of desktops of a particular model on location B. If I zoom into a location I can see the linked computers, but no way to filter the list by type or modle. If I try to make a search for Computers, I cannot specify which Location I want. How can I ge the listing I am looking for? Please help.. Guillermo.