Exchange 2K3 Server Migration

Our current MS 2K3 – Exchange 2K3 server is nearing end of life. We are currently awaiting a new ‘beafier’ server which should serve us well over the next 5 years.

Does anyone have experience or suggestion on this type of migration as it is the sole email server for the company and handles our OWA for workstations & PDA’s also.

I have configured much of the server myself including OWA but this type of project is on for which I have no experience.