Attorneys for actor Rob Lowe will go before a federal judge in Atlanta today in their attempt to kill a lawsuit stemming from a sexually explicit videotape he allegedly made of a teen-age girl during a visit to Atlanta during the Democratic National Convention. Lena Arlene Wilson sued Lowe for unspecified damages, contending he enticed her daughter, Jan Parsons, then 16, into a videotaped sexual encounter with another woman. According to published reports and court documents, Parsons and a friend met Lowe, star of films including "St. Elmo's Fire" and "About Last Night," and returned to his hotel suite, where they had sex with him and each other as Lowe taped the proceedings. Excerpts from the videotape have been shown on various television programs. A motion by Lowe's attorneys denies he "has committed any wrongful acts giving rise to liability." But a motion from Wilson's attorney says witnesses have confirmed Lowe had sex with Parsons, and contends that Lowe has admitted it to his California lawyers. Lowe's attorneys have contended that Wilson and her former husband attempted to extort money from the actor before she filed her lawsuit.