Jeffrey Williams (8/10/2009)
Thanks for the links - not sure where in there it talks about side-by-side installation, but I will review it in more detail when I have some time.
The first one (Katmai...) talks about ensuring that SSIS 2008 was written so it could be side-by-side. Unlike other services, such as the SQL Active Directory Helper Service and SQL Server Browser, it actually creates a separate, new service for SSIS 2008. The one issue we've seen is knowing what SSIS version a package was created with and executing the correct version of dtexec since we tend to run packages as part of larger batch jobs.
K. Brian Kelley