As ever, it depends very much on your budget. At the moment, you'll be up and running with basic video editing with the addition of a firewire card (assuming you have a DV camera) and cheap editing software such as Pure Motion Edit Studio.
Without a VIVO graphics, you'll need to purchase some additional hardware to input your analogue VHS signal. With your setup, it would probably be best to go for a dedicated analogue to digital converter. Again it depends on your budget, but lower end products are ADVC50 (or 55 - see
http://www.planetdv.net/Content/Digi...Converters.asp for a complete range) and the offerings from Dazzle
http://www.pinnaclesys.com/VideoEdit...24&Langue_ID=2 (amongst others). Note the minimum specs on the products - and that you're quality will only ever be at best as good as source!!!
To burn to DVD, you'll need a DVD burner with the appropriate software