Windows 7 service to check file copy and start exe

On a windows7 server we are copying files from another server and want to have a windows exe start after the file has been copied over. The files can be copied from different operating systems/servers so we would like a simple service sitting on the windows 7 64 bitserver that calls an exe when the file has finished copying over into a specific folder. We would like to be able to specify the exe call and the folder so it is not hard-coded in the service. Bid is to deliver a solution along with instructions for use.