no logo or watermark

can someone please tell me where to get a free converting program so that it converts video types to .vob but will not leave a watermark or logo?

http://www.download.com/VSO-DivXtoDVD-Converter/3000-7970_4-10376028.html?tag=lst-0-1

You can use the trial version of VideoCharge Pro. During the former 10 days of the trial period the trial version works without limitations (i.e. does not leave a logo).
Look for it somewhere at http://www.videocharge.com/

how to remove a logo on a dvd