Question : Do I need to run setup /ps and setup prepareAD if I am installing Excahnge 2010 into a an Excahnge 2007 organization? I insert the xch2010  on the new server and run teh comands there or on the D

Do I need to run setup /ps and setup prepareAD if I am installing Excahnge 2010 into a an Excahnge 2007 organization? I insert the xch2010  on the new server and run teh comands there or on the DC?

Answer : Do I need to run setup /ps and setup prepareAD if I am installing Excahnge 2010 into a an Excahnge 2007 organization? I insert the xch2010  on the new server and run teh comands there or on the D

You will have to run all these commands on the Exchange Server before the Installation.

http://technet.microsoft.com/en-us/library/bb125224.aspx

The Schema Version is Different for Exchange 2007 and it needs to be updated to Schema Version of Exchange 2010.

Usually these commands will be run by default when you run the Setup Wizard.