Is there any examples for psgetsid?

The article says, we should modify the registry key's for the groups

I have in the registry, SQLGROUP, AGTGROUP and FTSGROUP is having some value.

to install SP3, do ineed to delete...

It is one way replication and Immediate updated Transaction Replication.

queries used read uncommitted isolation level to retrive or updating the data.

In Server B - Select statement only

In Server A - Insert, Delete, Update statements wil run.

S.

In Server B - DDL Statements

In Server A - DML Statements

They are performing DML statements.