Hi, shuyo. Thanks for sorting out the confusion caused by using Informac — a handy utility that I also use sometimes, but of course not the same thing as System Profiler.
It appears that your Tibook has a different Superdrive in it from mine. Apple may have used different drive models in earlier and later 1GHz Tibooks (mine was built during the final week of production), or perhaps someone has replaced the original drive in yours with an aftermarket unit. Your drive is reported to be unsupported for disc burning, a problem that might be addressed by downloading and installing
PatchBurn. But that doesn't explain why it can't even
read discs. Maybe the drive is just dirty, in which case a DVD drive cleaning kit from your local video store might take care of it.
As for why you have the "@" symbol in place of "A" in the System Profiler information about your drive, I'm completely mystified. Open System Preferences and click on the International icon. In the International pref pane, click the "Input Menu" tab. Which keyboard layout is checked in the list that appears? Perhaps that has something to do with the wrong characters appearing in your System Profiler. But I'd be a lot more inclined to think so if "ATA" were being displayed in your System Profiler as "@T@". I just don't know what's going on there.