Networks

My company recently changed to a new Exchange Server with a different IP address. I had installed outlook 2007 originally using the customization wizard and inputed the previous IP address of the exchange server so it would automatically create the users profile and connect them to Exchange without me having to set it up for every new user. Now that the exchange server IP has changed it no longer works. I have edited my MSP file with the new IP address but I can't figure out how to make the client use these new settings. I have uninstalled Office and re-installed it using the new MSP file but it doesn't seem to make the change on the clients PC. Any ideas? Thanks in advance for any help.