Just to make it available handy... 

How to prepare schema for LCS\OCS

LCScmd.exe /forest /action:Schemaprep

How to verify if schema is prepared for LCS\OCS

LCScmd.exe /forest /action:checkschemaprepstate

How to prepare the forest for LCS\OCS

LCScmd.exe /forest /action:ForestPrep

How to verify if the forest is prepared for LCS\OCS

LCScmd.exe /forest /action:CheckForestPrepState

How to prepare the domain for LCS\OCS

LCScmd.exe /domain:myopwv.com /action:DomainPrep

How to verify if the domain is prepared for LCS\OCS

LCScmd.exe /domain:myopwv.com /action:CheckDomainPrepState

 
OCS 2007 supportability issues on Windows Server 2008