How to finalize dvd-rw in windows

you need to do two selection
1. un-check the option which says multisession
2. select disk at once.

these option vary burner to burner so it could have better if you posted your burner name and version so i can help to to navigate to the options anyways
the first option you would find most proberly at the start up of your burner and second at the second last page before pressing to burn - it may be vary but these two option are the only options.......