Burning to DVD questions

I will be getting into DVD burning by the end of this month and will be transferring shows from my TV, Digicam and VHS to my pc then burning them to DVD, will also be copying from DVD. I have a read a CNET course on it but still have some questions and would appreciate if you guys can help me out please. My first question concerns this particular Analog-to-digital Converter, if anyone can take look here please
http://www.dvdo.com/companion/adv-2000.php

and tell me if I can use this unit for burning my stuff to DVD? I will be purchasing this unit for another purpose [music] so instead of having to buy a separate unit for DVD burning purposes, it would be great if I could use this one unit for both. Anyone? Thanks.
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