Hibernate version: 1.2 GA

Classes:
Let's say we have :

class Person {
PersonPk Id;
DateTime DateOfBirth
}

class PersonPk {
string FirstName,
string LastName,
}

Car {
int id
string Name,
double Price,
Person Owner, <<< how to map this ?
}

Tables
Person {
[PK] FirstName varchar(20),
[PK] LastName varchar(20),
DateOfBirth DateTime
}

Car {
[PK] Id int,
name varchar(20),
price double,
[FK] OwnerFirstName varchar(20),
[FK] OwnerLastName varchar(20)
}

Question
How do i write the Car's mapping to reference its owner. All documentations i've found seem to reference only class with single Id.

Note
1) I've tried things like
<class name=Car>
...
<many-to-one Name="Owner" class="Person" >
<column name="OwnerFirstName" />
<column name="OwnerLastName" />
</many-to-one>
</class>
but of course, nhibernate complains about this.

2) the classes and table schema are simplified to help you understant what i'm want to know.

Sorry, that was working ...

You can use
<many-to-one ...>
<column name="" />
<column name="" />
...
</many-to-one>

NHibernate will use the declaration order to match columns with the composite pk of the referenced class.