JESSE JACKSON: Allegedly paid secret 450G.

Ex-mistress Karin Stanford also reveals that to prove Jackson was the father of her 22-month-old daughter, she froze a condom containing his sperm, the National Enquirer says in its upcoming issue.

It says the book also alleges that:

* Before giving birth to their child, Karin was pregnant by Jesse a previous time but had an abortion at his request.

* After learning of the affair, Jackson's wife, Jackie, was so angry that she pointed a gun at him in their Chicago home and had to be restrained by a guest.

Raenelle Zapata, Stanford's lawyer, said, "At this time, Karin is not writing a book. She may or may not do a book in the future."

The lawyer denied that Stanford received $450,000, but said she couldn't comment on the other allegations.

"One of the reasons [her client] hasn't done anything is she is concerned how her daughter will view this when she grows up," Zapata said.

What Stanford decides to do depends on whether she reaches a support agreement with Jackson.

"She wants to make sure that her daughter has the same opportunities as his children," the lawyer said. "I don't foresee any problems, but you never know. If we can't settle, we will go to court."

Jackson, who spoke at a hospital-workers rally in Bronxville, said he had no comment on the support agreement.

As for the book and its allegations, he said, "I know nothing about that."

When the story broke in January, Jackson said his Rainbow Coalition paid $35,000 to Stanford, who had headed the group's Washington office, and that he paid her $3,000 a month in support.

But the Enquirer says the fiery preacher got supporters to cough up a secret payoff of $450,000.

Not so, said Michelle Jordan, Stanford's spokeswoman. "The allegation about a secret payoff is completely untrue."

The newspaper also says that Stanford borrowed a page from Monica Lewinsky - who kept a blue dress stained with ex-President Bill Clinton's semen - to prove he was the father of her child.

After Jackson made love to her, she kept the condom he used and stored it in a freezer, the paper says.

The next day, she took it to a lab, which established a DNA match, it says.

The Enquirer says Stanford, a former professor, has written 10 chapters of the book, tentatively titled "Public Servants, Private Lives."

But if her book is making the rounds, it has failed to ignite much buzz in major publishing circles.

"I haven't heard anything about it," said Alfred Regnery, head of Eagle Publishing and Regnery Publishing in Washington.

This story can be found online at:  http://www.nypost.com/news/nationalnews/27661.htm