Generating the referential constraints order from database

Hello all, We have referential integrity turned ON in some of the databases. I tried to find out the sequence from the database so that the customer can load the data without turning OFF the constraints and which makes our life easier too. Referred the sysconstraints, sysrefernces, sysobjects but i am not able to come to a solution. Also whether any body had a problem in implementing recursive relations constraints pointing to the same table) Thanks in advance Dhanesh