ROS without SUS and PI

Dear  Experts,

We are planning to implement ROS without SUS and PI.  The process is once the Registration is done ROS the selected supplier must be transferred to R/3.

i have questions on the below points.

1. Do we need to consider ROS in a separate client?

2. How do we define the questionnaire ? Any step by step document available to do the same

3. What are the configuration steps involved for this?

Request to help me on this. we are using classic scenario(SRM 7.02 & ECC 6.0 Ehp6)

Regards

HBT