Hyperlinking to files on a server - round 2

Hi all,

I read this thread:

https://community.accelrys.com/message/3720#3720

However, I've had no luck with directly linking to files.  I've started a new thread as I'm unsure if what I'm doing is completely relevant to that thread.  Here's what I'm trying to do:

A protocol is run via some javascript (from a hosting PP protocol), which saves a file & returns its URL.

Then, the hosting protocol calls the window.open() Javascript method on this URL - to prompt a download.

The question is - how do I ensure I get the correct URL?  I'm specifically opening a file in my user directory, i.e:

C:\Program Files\Accelrys\PPS\\public\users\ed\tempfilepleasedelete.sd

When I look at the URL supplied in the "results" tab of a run PP protocol, I get a prefix, followed by a long string, like this one:

http://servername:1234/scitegic-bin/DownloadFile/SID/AgD4AKR8AAAA...  ...@%21u3D%21/filenameC:/Program@%21u20%21Files/Accelrys/PPS/public/users/ed/tempfiletodelete.sd

So, I'm a tad puzzled about how to link to the file correctly.

I'm using Firefox, though I cannot open the link I'm giving in IE either.  I'm aware of this security feature in Firefox:

http://en.wikipedia.org/wiki/File_URI_scheme#Mozilla

I'm not sure what I'm doing wrong!

Thanks in advance,

Ed.