Paul Weiser, 28, wrote to Dear Abby asking advice on how to handle his fantasies about having sex with his girlfriend's 10 and 3 year old daughters. Columnist Jeanne Phillips said she agonized over whether to report the letter, since the column's credibility is based on anonymity for those seeking her advice. Weiser was charged with three counts of possession of child pornography. Forty pornographic photographs of children were found in his computer after his arrest. Prosecutor Paul Tiffen said, He acknowledges he needs help and denies ever acting upon any desires.   He pleaded guilty to possession of child pornography yesterday and was given 8 years' probation.  Weiser had faced up to 5 years in prison if convicted and a $30,000 fine on each count.  His sentence also includes counseling and electronic monitoring.  

(Milwaukee, Wisconsin)