I was able to install SQL 2008 July CTP as a Virtual Image, tried to test few replication tasks to know what has been changed since last versions. At this time I would like to use the replication scripts from SQL 2000 version to see what it takes, nothing much I believe compared from 2005 to 2008. While going this replication security process gone ...

  Yes. This is supported as SQL Server 2005 and 2000 can be installed side by side on a cluster successfully. With regard to achieve this there should be more care on choosing the shared- disks & IP addresses with sensible resourced hardware. 1. Separate Physically-shared disks for SQL Server 2005 and 2000. 2. Separate ...