Query Problem - Use Group By?

Hi everyone,

I'm having problems with a query.
I've got a table with the following fields in my Employee table:
EmployeeID, FirstName, LastName, SupervisorID

I'm trying to create a query that will pull the following information about all the employees:
FirstName, LastName, {Supervisor LastName}, {Supervisor FirstName}

The supervisor first and last name comes from finding the correct EmployeeId that matches the SupervisorID in the employee table.

Table Data:
EmpID, FirstName, LastName, SupervisorID
111, John, Doe, 222
222, Jane, Doe, 444
333, Carl, Smith, 444
444, Sally, Gates, 555

Desired Query Results:
John Doe, Jane Doe
Jane Doe, Sally Gates
Carl Smith, Sally Gates
Sally Gates, etc.....

Would I need to use a GROUP BY in my statement?

Thanks,
CRhodus