I get the Maddog external 16X 7 in 1 dvd writer. However, it only burn CD-R but not DVD-R even after I flash with the latest 1.f3 firmware for that device. The model is: MD-16XDVD9A2. So I return it and get exchanged for another one. I thought they are the same. However, when I get home, I found out that it is a little bit different. The replaced one is not even recognized by the system. I use windows XP professional SP2. I check device manager and find the model is really: MD-06XDVD8A2. I call maddog and they told me they are almost the same except the rewrite speed is different. But my laptop just does not recognize it. However, my IBM T-42 does recognized all other USB device. There is a yellow exclamation mark besides its maddog label under DVD/CD-ROM drives as: M@D DNG MD-06XDVD8A2 USB Device and I think the computer listed it also as USB mass storage device. when I right click the property, it gives me: This device cannot start. (Code 10). Please help. What could be wrong???