With Raid0 (no redundancy), your chance of restore data are pretty slim, even by professional service. I know this is not what you want to hear but you could try my suggestion here.
The tool to try is SystemRescueCD (http://www.sysresccd.org/Main_Page). Basically it boot & run Linux from CD or USB, without having to install onto the hard drive. It has some system utilities in graphical mode, so you can see your stuff. Read up & research first before try it. I am NO linux expert but I have learned somewhat thru research and experiment. I recently swapout my 2x500GB and replaced them with 2x750GB seagate drives using this tool.
The idea is to see if you can see the data off the drives first before restore or copy to another drive.
You would connect both MBWE drives only and only to the PC then use mdadm command to assemble sda4 & sdb4 as raid0 to md4 device, then mount /dev/md4 to /tmp/data (may have to create this directory using mkdir). Once mount successful you can browse to /tmp/data (using midnight commander tool I believe) to see if your data still intact. Only then you should connect another drive and try to copy data over. You would mount this device (say /dev/sdc) somewhere else. If you intended to use this data in Window then the new drive would need be formatted by window as NTFS already. If you are planned to copy data to an existing drive in your PC, just be extra careful so you don't end up wipe out your stuff.
The letter in sda4, sdb4 or sdc is all depended how you connect the drive to the sata controller on you PC. Port0 would be sda, port1 would be sdb etc…
I hope all of this help you somewhat.
PS. Provided that you are not urgently need the data and if you get stuck somewhere in the process, I am only a 401&410 drive from you and can only offer some assistance with my very limited time. No matter what you should prepare to accept the worst case and hope for the best. You will need a lot of time for reading & research, trial & error.