In my memory, there is no Transporter Suite in Exchange 2010 - it has been dropped. Your have to use the 3rd party tools or implement a temporary Exchange 2007 server which will coexist with Exchange 2010.
If you choose the latter one way, you can find the information about migrating to Exchange 2007 by this link:
Hope it helpful:)
Hi edzy,
Good article given by Jack, please refer to it. But please note that the transporter suite is not supported on Exchange 2010, when you want migrate to Exchange 2010, please follow these steps to achieve the goal:
1. Prep the environment for Exchange 2007.
2. Follow the document given by Jack, migrate from Lotus notes to Exchange 2007.
3. Prep the environment for Exchange 2010.
4. Migrate from Exchange 2007 to Exchange 2010.
Here is related information for you:
Note Migration to Exchange 2010
Transitions and Migrations
http://technet.microsoft.com/en-us/magazine/ee681554.aspx
Thanks,
Evan