Forget about Jmicron. Disable Jmicron in the BIOS unless you need IDE for your optical drives or older IDE HDD's.
The group of 6 sata ports together on the mobo are all Intel ICHxR. The lone sata port, the esata port, and the IDE port are all Jmicron.
What version is your XP disk? SP1, SP2, SP3? I'd recommend slip streaming if you haven't done so already. You can use nlite to do this. You can also integrate the RAID drivers using nlite.
Here is the
drivers you'll need for ICHxR.
#1 is the Matrix driver which gets installed after you get Windows installed and running. Below that (#2) is the floppy creator which you'll need to create the F6 floppy, or extract the drivers so that you can integrate the drivers using nlite.
1. Set Sata mode to RAID (choices should be IDE, AHCI, and RAID).
2. Reboot, and press cntl-I during boot until the Matrix console pops up. From the console set up your RAID array(s).
3. Reboot, and run off your XP disk, making sure to press F6 if you're going to use the floppy. *If you integrate the drivers make sure you don't have a floppy in the drive as XP will get confused.
4. Select the correct ICHxR from the list if you used the floppy, and continue installing Windows. You should be able to see the arrays you created when you get to the drive selection screen to choose where to install Windows.
Let me know if this doesn't work.