Hi I am one of the Experts here in Just Answer.com The upgrade procedure is actually very easy, but remember once you do there is no way of going back to Standard with out a reinstall
To do the upgrade all you have to do is put in the product key for Exchange Enterprise and Restart all the exchange services
What is the process/procedure for the upgrade?
Once you put in the Enterprise key exchange will activate anything enterprise has that it doesnt
1. Open "Exchange Management Console".
2. Navigate to "Server Configuration".
3. Right click on the server that need to be upgrade to Exchange 2007 Enterprise,
and press on "Enter Product Key" button
4. Complete the wizard.
5. Restart the Exchange 2007 Services. (or reboot the server either works)
So there is no need to re-run the setup utility?
nope exchange will now what to do once you enter the Enterprise key and restart all the services its that simple
And this applies to Exchange 2007 (not 2010)?
Yeah Microsoft actually has a KB article on exactly how to do this here Its the exact steps I mentioned above as I did this for my company not long ago http://support.microsoft.com/kb/556026
Fab, Many thanks Omer
Glad I could help