As far as I'm aware it should be possible, taking a full backup and creating IDR boot disks for the server you're going to restore to.
However, I've been trying to get this working on Win2k Server's, and the boot disks do not seem to work, they start the Windows install... as they apparently should - but at some point the IDR wizard is supposed to kick in but it does not, and Windows keeps happily installing till I have a fresh copy of Windows Server and no restore.
If anyone has any ideas why, please let me know... I do get the IDR splash screen when booting off the IDR created boot cd saying that 'if you are testing the boot media, it is working ok - remove the disk and reboot the pc, if you intend to restore then press return' etc