If the dvr.ms Video files DON'T need editing i.e. take out the Ads. Use DVD Flick
It's a Free Program.
If you need to edit the video, Vista Movie Maker (?) should be able to do that, Can't say for sure, Not got my vista PC up and running at the mo.
Paid for programs I know that will Edit & Burn are,
Ulead VideoStudio 10, 11, 11.5 & 12.
Roxio Easy Media Creator 9 & 10.