This is a work for R-Studio rather than for R-Drive Image.
But before start, be warned that, even if the OS is correctly copied onto the new disk, that doesn't guarantee that it will successfully start in the new system. That Windows XP installation doesn't have the drivers necessary to run on the new system board, processor, controllers, etc. On the contrary, it will try to use drivers for the old system board, processor, controllers, etc. So, the result may wary from not starting at all, the blue screen of death, extremely slow and unstable operation, and for sure problems with Windows XP activation. Or it merely asks for drivers for the new hardware. So be ready for this.
So the procedure will be the following:
1. Install R-Studio on a working machine and connect all the drives to it. Direct connection to SATA ports is preferable, but if those aren't enough, you may use USB to SATA bridges.
2. Using this software:
ReclaiMe Free RAID Recovery, determine which disks are from the RAID and the RAID parameters. You may try those 3 disks it 3 combinations, if this program yields a result, those disks are from the RAID, if not, try another combination.
3. Create a virtual RAID 0 out of the RAID disks. See R-Studio's on-line help:
Volume Sets, Stripe Sets, and Mirrors for instructions.
4. Copy the volume from the virtual RAID 0 to the new disk using the copy module from R-Studio. See R-Studio's on-line help:
Object Copy for instructions. If you like, you may adjust the volume size during the copy.
5. Copy the third old disk to the new one using the same copy module.
6. Connect the new disks to the new machine, try to start it, and see what happens.
I know this scheme was tried successfully, but that was on the same hardware except disks. The system started successfully, then told that it was installing new drivers for the new disks, and since that it worked smoothly.