Apart from the link that DJ gave that doesnt appear to work at the moment on the download,that file doesnt seem to be available from anywhere else.
I think that you should try as Michelle suggests and run System Restore to a point prior to when you deleted it.
For future reference if you are going to delete something always make a copy of the file and keep it somewhere,preferably on a floppy so that if you do find that you need it,you can easily replace it again :doggie: