I am wondering if it is possible to create spoof of a windows letter drive?

I have a script that was written by someone else in my company who uses windows. Some file locations are hard coded and cannot be changes for various reasons, so I would like to be able to create a "D:" drive in os x.

Anybody know how to accomplish this?

(I know it is a silly request, but I honestly am unable to change the script, and short of using an old Dell, I don't know what to do)

Thank you.