[AccessD] SQL Equivalent

In Access you can create a query, even in the QBW, where you make a field [FieldA]=[FieldB] as 
AIsEqB and the result is a true / false in a separate AIsEqB field.

I have been trying to do that in SQL Server and it just will not accept the additional field.  More 
precisely, it tries to turn the [FieldA]=[FieldB] into a string '[FieldA]=[FieldB]'.

If I manually edit the SQL to include a where clause looking like that it turns it into an inner join.

Is there a way to create this construct (a new field that evaluates to a true / false) in SQL Server?

-- 
John W. Colby
www.ColbyConsulting.com