Yes, this is probably possible. Crappy software RAID solutions like "NVRAID" are supported by the "dmraid" utility which handles proprietary partition standards.
You will need to have IDE/SATA support for all the controller you wish to include in the array, however, so you'll still need sata_nv.
These products do NOT implement hardware RAID, and as such there is no requirement for a driver with "hardware" support for RAID. dmraid works in userspace and provides a neat software solution.