Handling multiple object types with different fields in the same grid

[Joshua]

Basically, I need to be able to have a grid that manages a heterogeneous collection of two different kinds of objects. To give you some context, I need to be able to handle contact information for both individuals and groups. While they share most of their info, they differ in that individuals have both a first name and last name, while a group has only one name. So I am faced with the problem of how to handle editing for both types of objects in the same grid. 

Is that enough information, or do you need more? Does anyone have any suggestions on how to handle this tricky problem?

Thanks.