Hmm. Both links work for me.
Check your mail.
If the drive is dead you won’t be able to flash it in Windows.
If you don’t have a floppy drive, you will have to use a bootable CD-ROM disc to boot to DOS. If you are using NTFS you can copy MTKFlash and the BIN file on the bootable CDR.
Since your burner is down, you may have to create this bootable CDR on another computer. If you don’t have another ATAPI device (CD-ROM, DVD-ROM) that works on your computer, you will have nothing to boot from anyway.
If your drive is dead and this was not due to a firmware installation failure, I doubt very much that underclocking the firmware will revive it.
See the MTKFlash Guide thread.