>For arguements sake lets say it Win 2003.

If it is Windows Server 2003 and the administrator has enabled Volume Shadow Copy for the volume the file was on, there will be previous versions of the file available *IF* the file existed prior to the last Shadow Copy that was run on the server (shadow copies are run at an interval that is set-able by the admin). XP and above clients can recover these files.

If not, then the only recourse is to hope that the administrators were using a third party delete/recovery utility to allow recovery of deleted files or be prepared to do some serious hacking which will likely cause more trouble than just the deleted file.