This is a script to find all constraints and check if they are enabled or disabled.
select [Table] = o2.name, [Constraint] = o.name, [Enabled] = case when ((C.Status & 0x4000)) = 0 then 1 else 0 end from sys.sysconstraints C inner join sys.sysobjects o on o.id = c.constid -- and o.xtype='F' inner join sys.sysobjects o2 on o2.id = o.parent_obj