TeamSite upgrade from 6.1sp2 and 7.1 to 7.4.1

System

Hi,

We are upgrading TeamSite 6.1 SP2 and 7.1 to 7.4.1 new hardware, fresh install . There are two TeamSite instances running currently (6.1 SP2 and 7.1). We want to consolidate current environments in the signle TeamSite 7.4.1 in the new system.

TeamSite 6.1 SP2 is running on Windows 200.
TeamSite 7.1 is running on Window 2003.

Note: The TeamSite 7.4.1 will be installed on a new hardware with Windows 2008. It is a upgrade using fresh install.

Please provide the best approach and steps to do this upgrade.

Thanks & Regards,
Sambasivarao.B