There is no redeployment tool for CRM 4.0, thankfully.
What you want to do is Import an Organization. If you already have your
target CRM server installed, you just need to restore a copy of your source
database onto your target SQL server. Then on the target CRM server, use
the CRM Deployment manager to import the organization. There is a wizard
that steps you through the process.
Download and read the CRM 4.0 Implementation Guide for details, or search
the internet now that you know what to search for. There's a lot of