The co-founder of an Internet poker company pleaded guilty Tuesday to conspiracy charges, admitting that he knew he was breaking the law when he arranged for U.S. banks to process gambling proceeds.

Brent Buckley, 31, entered the plea in U.S. District Court in Manhattan, saying he knew it was illegal to accept credit cards so that customers could gamble on the Internet.

"I knew that it was illegal to deceive the banks," Buckley told Magistrate Judge Ronald Ellis in a plea deal that calls for him to receive a sentence between a year and a year and a half in prison. Sentencing was set for April 19.

The charges stem from a prosecution that shut down U.S. operations of the three largest Internet companies last spring.

Buckley was a co-founder of Absolute Poker. Prosecutors said Absolute Poker, Full Tilt Poker and PokerStars tricked U.S. banks into processing billions of dollars of gambling transactions by disguising the money as payments to hundreds of non-existent online merchants purporting to sell merchandise such as jewelry and golf balls.

Buckley, who stood with his hands clasped behind his back, was described in court as the director of payments for Absolute Poker.

The U.S. in October 2006 enacted the Unlawful Internet Gambling Enforcement Act, which makes it a crime for gambling businesses to knowingly accept most forms of payment in connection with the participation of another person in unlawful Internet gambling.