Migrating Reporting Services 2005 With Integrated Sharepoint 2007 To Another Server

hello good afternoon, I am having this issue, I need to move reporting services from one server to another, but I need that credentials, roles and reports stay the same. But as the reporting services is integrated with sharepoint, dont know if I can move both at the same or it has to be done one at a time. this is just data migration, but still I will like to Know how it can be done having the same structure with the roles and credentials. or it is prefered to do a ghost?? but the issue will be that we have the reporting services in one place and the data in another... don´t know how this will affect. thanks in advanced for the help.