Well I played around with this some more yesterday. I haven't done the part Gcoghlan mentioned, just saw it this morning, and am at work. But i did notice, that when I would select the drive from the list (the only one in the list), something would flash real quick where it says "Ready" across the bottom. Well after playing around with it more, I managed to get what it was saying to stick, it says something to the extent of "admin access needed for SPTI". I was reading some of the dvdinfo change log updates, and that was a feature that was added it a version of the program. My account is an admin account, so I'm not sure what the admin access it needs is. I also tryed changing those settings to APTI, and even tried having nero provide the dll. But when I do that it just errors, and almost everytime dvdinfo crashes when I click ok to apply the change. So I think there is something unstable about it. One other thing I noticed that may or may not be useful, is I am not able to eject the dvd drive with the little eject button within dvdinfo. Also if i click the info on the drive, it doesn't give me the information about the drive like what it can read, and compatiablilty information. Not sure what's going on, but when I get home, I'll try what you mentioned Gcoghlan. I'm not entirely sure what you mean by read block lba 20, but I imagine if I'm in front of my computer I coudl probably figure it out. Thanks.