it has been ages since I last touched my benq drive, and my memory is a lil hazy on how exactly I did it (drinking while flashing is not a good idea

) BUT I do know that in order to flash it, the way I did it, was in PURE DOS (I.E. boot from a floppy disk or pen drive (pen drive STRONGLY recommended)) and that you MUST cut the traces as shown from the link that ToBbErT posted for intel chipsets (I did it originally on ICH7, but it should work on ICH9 also).
I also remember having to fight with it during dumping/flashing. It involved having to put it into "normal" mode in order for dosflasher to find it, then in "recover" mode when doing the mode test for reading the fw properly and flashing properly.
Being that the benq drive is rather hard to brick (the ability to force the drive into recovery mode via cut traces) makes it a rather noob-friendly drive if you can solder. I know that when I first started working on mine I thought I bricked it (bad flash) but was able to recover it rather easily.