Okay when you run setup you will need three additional downloads. They are:
Microsoft .NET Framework 3.5
http://www.microsoft.com/downloads/details.aspx?FamilyID=333325fd-ae52-4e35-b531-508d977d32a6&displaylang=en
WinRM 2.0 CTP3
https://connect.microsoft.com/WSMAN/Downloads
Windows PowerShell V2 Community Technology Preview 3 (CTP3)
http://www.microsoft.com/downloads/details.aspx?FamilyID=c913aeab-d7b4-4bb1-a958-ee6d7fe307bc&displaylang=en
Enjoy .. gonna read a doc or 2 before I forest prep my Exchange 2007 domain! .. yeah I know CHICKEN!