Hello AnriChan,
Thank you for using Microsoft Windows Vista Forums.
You should be able to determine the manufactuer of the DVD/CD writer in "Device Manager". I would go to "Start" and type "Device Manager". When you do this go to DVD/CD ROM/Burner you can get the name of the DVD writer and have the option to update the driver.
I would go to the manufactuers website to determine the speed of the writer. Typically you shouldn't have any problems with writing on the slowest speed. This can take more time, but each writer is different on the speeds. Please let me know if this has helped or if you are still having any problems.
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