DNA a new tool in researching family history.(Lifestyle)

Byline: GENEALOGY By Mark Baker The Register-Guard

Bennett Greenspan began looking for his ancestors as a junior high school student in Omaha, Neb., in 1964.

Four decades later, he has helped thousands try to locate missing links in their family trees by simply swabbing the inside of their cheeks. Not that he does that himself, he just sends you a kit.

"I certainly think this is going to become mainstream for genealogists," Greenspan says from Houston, where he runs Family Tree DNA, the company he founded in 1999 after hitting a roadblock in his own family tree research.

Greenspan will speak Tuesday at Temple Beth Israel during a general meeting of …