Today i decided to move my DHCP from the old Small Business Server 2003 as their is no longer support for this version of Windows and moving it to a newer OS will be better. The move was pretty straight forward, you can look at the link below, i successfully exported the DB, installed the DHCP role on Windows 2008 R2 and reimported the DB without any errors. All my reservations and leases were still in place.
I then unauthorized DHCP on SBS 2003 and removed the role. I then rebooted one of my notebooks and let it renew its IP, that was successful as well. Hope it helps anybody else who is trying to move roles.