SystemRescue CD (http://www.sysresccd.org/Main_Page) is the tool you may want to try out. Basically it boot & run Linux from CD or USB, without having to install onto the hard drive. It has some system utiltilies in graphical mode, so you can see your stuff.
The idea is to see if you can read of the drive first before restore or copy to another drive.
I would start by connect only and only 1 MBWE drive to the PC and try to see if the files are intact. The data should be in sda4 partition. If I can't then I would connect both MBWE drives then use mdadm command to assemble sda4 & sdb4 as raid 1 to md4 device. Therefore for 1 drive I would mount /dev/sda4 to /tmp/data (may have to create with mkdir first), for 2 drives I would mount /dev/md4 to /tmp/data. Once mount successful you can browse to /tmp/data (using midnight commander tool I believe). Once you are satisfied with your data, then you would connect the new drive and copy data over and 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 haven't tried the data portion of the MBWE yet since it was emtpy, but I have tried with partion1 (sda1 & sdb1) portion.
Another thing you could try is mount 1 drive to your PC and install "EXT2IFS" (googled it) on window and using "IFS drives" in control panel to assign a letter to the partition 4. Haven't try yet but just a thought.
I hope this help somewhat.