Dat to dvd

does anybody know of any good freeware that can convert .dat to dvd for homeviewing on a dvd player. A lot of the programs that i use leave water marks or just suck.
Im using wondershare video to dvd burner righjt now and it leaves a water mark on the video and it takes hours to burn.

It probably leaves the watermark because you are using a trial of the program, download a crack for the full version and the watermark should go away.