Its a virtual cd image file that is been split into volumes named:
WE9.VCD.D00
WE9.VCD.D01
...
...i dont know into how much volumes.
And these volumes will be joined to make WE9.VCD file that can be mounted in Virtual Drive.
I think u need to get other volumes of the split .VCD file and use joiner program to join them.
Try HJSplit or similar program...