I currently have a 30 GB HD installed and want to add another with possibly more storage capability. ASUS's unclear tech support can't tell me how much HD storage is usable with the MOBO's current BIOS (v. 1005). They say that with the latest update (they're not clear on what that is- they've written me twice about it) I can utilize up to 100 GB of hard drive storage. I've tried to flash what I guess is the latest BIOS, v.1006, but have been unable to make it happen. I told them that but they totally ignored me. Also, from what I can understand from their garbled messages, it seems that I would have to add HD capacities to determine the amount the MOBO would be capable of utilizing. In other words, I'd have to add the 30 GB from my current HD to the amount of storage of the new drive to determine how much the MOBO could handle. For example, 30 GB + 60 GB = 90 GB total. I guess that would only be if I were using both drives at the same time. Is that possible, though?