Microsoft Exchange Service Host Fails to start

I have 2 Exhcange servers 2007 server running in Coexistance with an Exchange 2003 Environment. Server 1 (2007) will not start the "Microsoft Exchange Service Host" Service Even after a manually trying to start it will error out saying "Error 1053: The service did not respond to the start or control request in a timely fashion".  I get two events in the log that are as follow:

Event Type:      Error
Event Source:      Service Control Manager
Event Category:      None
Event ID:      7000
Computer:      EXCH01
Description:
The Microsoft Exchange Service Host service failed to start due to the following error:
The service did not respond to the start or control request in a timely fashion.

And

Event Type:      Error
Event Source:      Service Control Manager
Event Category:      None
Event ID:      7009
Date:            4/16/2008
Time:            4:05:06 PM
User:            N/A
Computer:      EXCH01
Description:
Timeout (30000 milliseconds) waiting for the Microsoft Exchange Service Host service to connect.

Server 2 (Also 2007) on the other hand all services star with no problems.

Neither of the 2007 servers have SP1 installed and both are on Windows 2003 Server R2.

Please help I am banging my head against a wall with this.

Thank you