I am trying to install exchange server 2007 on a server on our domain. It brings up an error stating that our network is a mixed network and it needs to be a native 2000/2003 or higher. Would it be easier to just create a new domain on the same network with this server to bypass the changing of the other servers? Our concern is that the other server applications may have issues if converted to native. If creating another domain is a good idea then are there any issues that could arrise?