Hi,
Got it working, thanks guys. I think I was using some old drivers, but I also included the JMicron drivers (even though the device was enabled) and that seemed to do the trick.
The old driver issue was because I was looking for a boot floopy version of the drivers. However for future note you can use the normal (post-windows installation) driver (~110MB file) and use "installer.exe -x" to extract the files, and then (for nForice 4xx driver) import the "IDE \ WinXP \ sataraid" folder into nLite