The download file is corrupt

[trevor who]

                                 Hi guy's,
    I downloaded the DVD version freeBSD version 8 and went to unpack it
                    and got these messages from winrar.
   !   D:\FreeBSD\8.0-RELEASE-i386-dvd1.iso.gz: Unexpected end of archive
         !   D:\FreeBSD\8.0-RELEASE-i386-dvd1.iso.gz: CRC failed in
               8.0-RELEASE-i386-dvd1.iso. The file is corrupt
           Can you let me know when it will be fine to download.
                                  Regards,
                                   Trevor