I am looking to manage a SQL Server 2008 DB using Management Studio 2005. The reason for this is because our server is a 64-bit machine and we only have the 64-bit version of t
The other question you asked was about managing 2005 servers with SSMS 2008 - and yes, you can do that. SSMS 2008 can manage 2008, 2005, 2000. I actually recommend that everybody use the latest SSMS 2008 client regardless of what server they're connecting to, because it has some nice perks and upgrades that work with all server versions that you connect to.
Be aware that SSMS 2008 has IntelliSense, but only when you connect to a SQL 2008 server. If you connect to a 2005 server, you don't get IntelliSense.