Response Group Services Fail to start

You will receive the following error if .NET 3.0 is not installed on the Office Communications Server when trying to start RGS. Log Name:      Office Communications Server Source:        OCS Application Server Date:          12/16/2009 2:01:17 PM Event ID:      32003 Task Category: (1055) Level:         Error Keywords:      Classic User:          N/A Computer:      demo-pool.us.corp.lab.com Description: The Application Host failed to…