Anyway to count the number of individual Cisco 3750 switches managed by NPM which sees a stack as one object?

noobes

I need to find how many individual Cisco 3750's I am managing with NPM. When I pull a report on 3750's I am getting(for example) 100 even though of those 100 'switches' 97 of them have 2 or more switches per stack. Any ideas?