The levels relate to the same, 0 is striping, 1 is mirroring, 5 is striped with parity and requires 3 or more discs.
RAID can be with IDE SCSI SATA or a few other high end connections like Fibre Channel
You dont need a controller card specifically but a controller of some sort. A lot of modern motherboards have RAID support built in via an extra chipset like a Silicon Image one. There is also software RAID support built in to some OSs but they offer limited capabilities.
Disks must be dynamic.