This your post? The number you list is the firmware revision, and not the drive model. MSI use the same numbering scheme for all their drives, so it really doesn't say much. I'm guessing your old drive was a DR8-A(2) (actually an
Optorite DD0401/DD0405 with Sanyo tech).
The real name/model of the drive should be listed in device manager. Also: As for your older HD-burned CDs they might be readable in other readers. They were originally ment to work in any DVD reader, but as I mentioned, they don't. You'll just have to try different drives.
The only MSI 8X burner without HD-burn is the DR8P (i don't know what this one really is), but that doesn't fit with the firmware revision, as this drive have a recent 110 posted at the MSI website. A quick google about the Optorites seem to indicate that the burners with a firmware revision ending in 'i' does not have the HD-burn fearure active, so I'm thinking you may still have a DR8-A(2).
Identify your drive properly and upgrade to either firmware
150D for the DR8-A or
160D dor the DR8-A2.