Depends what you're running and how exactly you "erased" it from your system. And no, it's not good, lol.
If you simply found a way to delete the file in Win somehow, have you checked your recycle folder? If you deleted the file from a command prompt which I can't see any other way myself, however, I've been known to be wrong a time or two, LOL, anyway, if that's the case, do you have your install cd? Would help to know what you're running exactly and what version, I have several OS cd's round here, can send you the file if I know what your running.
