Queens Theatre In The Park is scoring its biggest successes this season with three Off-Broadway shows -- two of which are still running in Manhattan. Late Nite Catechism, Maripat Donovan and Vicki Quade's comic exploration of Catholicism, has sold out its Dec. 17-21 Queens engagement, while Forbidden Broadway Strikes Back has added an extra performance, May 3, 1998, to accommodate ticket demand at Q-TIP. Anna Deavere Smith's Fires In The Mirror, about racial unrest in Crown Heights, Brookyln, has added two student matinees. (Smith's latest work, House Arrest, opens Nov. 19 in Washington DC.)

Here's the upcoming Q-TIP season schedule:
The Prince And The Pauper, with a book & score by Neil Berg based on Mark Twain's novel. (Nov. 28-30).

The Off-Broadway company of Maripat Donovan & Vicki Quade's Late Nite Catechism (Dec. 6-7, sold-out).

Molly Picon's Return Engagement (Dec. 17-21), about the beloved Yiddish actress and comedienne.

A concert by Barbara Cook (Dec. 27), star of The Music Man and the original Candide. American Place Theatre's Coming Through (Jan. 14-Feb. 1, 1998).

Princess Grace And The Fazzaris (starring Lois Nettleton), about an Italian family whose daughter is getting married on the same day as Princess Grace. (Feb. 11-22, 1998).

Fires In The Mirror (Feb. 27-March 2, 1998), Anna Deavere Smith's look at the Crown Heights riots, courtesy of Rhode Island's Trinity Repertory.

Chicago City Limits will play one show, March 7, 1998.

The Barry Sisters, based on the real-life Yiddish singing group. The remaining Barry Sister is working on the book for this musical, due April 1-5, 1998.

The Off-Broadway company of Forbidden Broadway Strikes Back (May 2-3, 1998 `lso scheduled for Q-TIP are cabaret legends Barbara Cook (Dec. 27); and Earth Kitt (April 25, 1998).

For tickets ($15-$19) and information on shows at Queens Theatre In The Park (in Flushing Meadows Corona Park, near the Queens Museum), call (718) 760-0064.

-- By David Lefkowitz