SATA raid has become an ugly beast as there is no one standard and drivers have to be individually tailored to each chipset. In other words, this may not be possible. You may try dmraid as this project is all about support for existing SATA arrays.

Rereading your initial post, I find that you are looking to increase the size of your ntfs partition. As this is best done with an operating system with naive ntfs support, I suggest that you acquire an application to do it from windoze.

If you insist on trying to do it from knoppix, please post back with the driver you have found to work and your results.