Hello!I currently have an Action Pack Subscription which allowed me to install Exchange 2003 Standard on a 2003 Server environment.Now i decided to buy an OLP license of Exchange 2007 Standard which allowes me downgrade rights to Exchange 2003.My Microsoft resseler told me that i don't need to reinstall the server, but just to change the product keys. I'm not sure should i change the key for exchange before the key change for Windows Server, which I also bought.I am worried that the production in my company could stop if anything bad happens during activation, eg. the old key is treated as invalid because the action pack subscription is expired.Thanks in advance!