Say goodbye to Napa Valley drives, and toodle-oo to Starbucks.

Hello, 24-hour house detention.

Notorious former Drexel University senior Jocelyn Kirsch made a surprise Philadelphia appearance yesterday in federal court, where it was revealed that she faces a new allegation of credit-card theft in California.

She was ordered by Judge Lynne A. Sitarski to wear an ankle bracelet and stay in her Marin County, Calif., home 24 hours a day.

Kirsch - half of the "Bonnie and Clyde" identity-theft duo accused of preying on friends, neighbors and city businesses to the tune of $120,000 - is permitted to leave her Novato, Calif., apartment only for meetings with her lawyer, said Assistant U.S. Attorney Louis Lappen, the prosecutor on the case.

Kirsch, 22, whose alleged criminal exploits with former love Edward Kyle Anderton appear in the current Hustler magazine, showed up in court wearing a gray Penn sweatshirt hoodie, black Juicy Couture velour sweatpants and white flat shoes. Her hands were cuffed behind her back, her brunette hair was pulled back and there was no no sign of her famed purple eyes, which are actually contacts.

Bail conditions were changed at the afternoon hearing because the U.S. Attorney's Office recently learned of the allegation that Kirsch had stolen a credit card in California..

Kirsch "didn't know the victim well. It was somebody she had contact with," said Lappen, who declined to identify the victim.

The crime "was similar to the activity she was engaged in here," he said.

Kirsch is believed to have made purchases with the card after her December arrest, but before the feds took over the case on May 12.

Lappen declined to reveal specific details, hinting that it would be discussed at Kirsch's plea hearing on June 5.

Her social calendar may be limited due to house arrest, but Kirsch will be busy in court over the next 12 days. First, she is expected back in federal court June 5, before U.S. District Judge Eduardo Robreno, to face federal charges of aggravated identity theft, conspiracy, bank fraud and other crimes.

Then, if that weren't enough, the Marin County District Attorney's Office had filed one misdeamenor charge of making a false emergency report against Kirsch earlier this month. She allegedly called 9-1-1 and reported violent screams coming from inside the Novato house that she formerly lived in. Police found no such activity in the house, and she later admitted to authorities that she had made the call.

Her lawyer, Stephen R. Kahn, said that Kirsch will plead not guilty when she appears in court in that case on June 9 in San Rafael, Calif.

Anderton, 25, and Kirsch are accused of committing fraud over the Internet, often purchasing high-end items by obtaining credit cards and using information from their personal and professional circles and from neighbors at the Belgravia, in Center City.

Sitarski ordered Kirsch to "refrain from criminal activity" and to stay away from Anderton or any witnesses in this case.

She also ordered Kirsch to check in three times a day with U.S. Pre-Trial Services. Kirsch will also be subject to random drug testing. The drug testing is "an added precaution to make sure she's following all the rules of pre-trial release and that's in fact where she's supposed to be," Lappen said. Her lawyer, Ron Greenblatt, did not make any statements at the courthouse. He did not return a call placed by the Daily News. Kirsch returned to California last night. *

Staff writer Joshua Mellman contributed to this report.