I download an update for my Asus motherboard which is in the form of an .awd
Can anyone tell me where I can put it, so that I can replace the old one or something. I would greatly appreciate it.
That is a bios flash image. Go to the asus website and read their how to flash your bios procedure.
Bios flashes are not to be taken lightly, you can render your machine a vegetable if you have a problem, so if you have no issues that require that newer bios, leave it alone.