the file by name? If you deleted it, it is very likely
gone for good. There are 3rd party programs available,
some are free to retrieve deleted files. Below is a
website you can download one from and try it:
PCWorld.com - Restorer v1.1 http://www.pcworld.com/downloads/file_description/0,fid,22
525,00.asp
If you delete a file/folder via the network the data is usually lost
because it will not go into the Recycle Bin. You could go for a data
recovery software to check if the file can be recovered on the Server.