Org Structure replication from ECC to SRM

Hi,

We are using SRM7.02 ,

1. steps to perform org structure replicaiton from ECC to SRM ?

2. how and where to define number range for objects created in SRM i:e, BP,CP..... etc

3. what are the inputs necessary during replication using report : RHALENI ( tcode: PA30) for insert and update ?

4. how to sync the data from ECC to SRM and SRM to ECC, is 2 way possible ?

please throw some light on this

Regards

Kumar