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"Can you burn your data to a DVD instead of a CD? Is it a permanent burn, or can you overwrite data like you can with some CDs. Are there two different kinds of DVD disks?"

Yes DVD is very good for data, each disc can take about 4gb of data. There are both dvd-r discs witch can be written to once, and dvd-rw that can be written to several times (just like cd-r and cd-rw). Yes there are two types of dvd discs (actually three), dvd-r and dvd+r. Any new burner (like pioneer 109) can handle both types. So just get a good burner and worry about the discs later (i prefer dvd-r though).

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You have been ever so kind with your help. I just have a couple of follow-up questions.

This is exactly what it says on my receipt for my NEC burner:

DVD+,-RW NEC 16x16. I'm assuming it does the things your Pioneer does. Am I correct? If I'm wrong, what am I missing? Also, what is the difference between DVD-R and DVD+R?

What exactly are fluid bearings? Do all of the modern drives have this feature?

Thanks again for your help.