rerickson wrote:it looks like I cannot replace the parts of the "file:///" prefix, is that right?
That's right, if you choose the URL option, it will add the "file:///" automatically. I believe that that is the correct syntax for URL paths of files on local disks. Did you try Y:/ instead of localhost/Y:/ for with: string?
EDIT: OK, here is what wikipedia says:
Here are two Unix examples pointing to the same /etc/fstab file:
Here are some examples which may be accepted by some applications on Windows systems, referring to the same, local file c:\WINDOWS\clock.avi
Here is the correct URI as understood by the Windows Shell API:
So, its seems that the replacement with Y:/ should work fine in your case.