I am attempting to migrate users from Unity 4.1 partnered with exchange 2000 to Unity 5 partnered with exchange 2007. I am installing the Unity 5 machine using upgrade rights from UCSS. We do not own a copy of exchange 2003, only exchange 2000. I have no access to the management tools for 2003. Can anyone offer advice on using the 2007 management tools on the unity 5 server? Thanks.