(CNN) -- Actor Wesley Snipes reported to a medium-security Pennsylvania prison Thursday to begin a three-year sentence for failing to file tax returns. The 48-year-old actor is now incarcerated in McKean Federal Correctional Institution in Lewis Run, officials said. Snipes' attorney said he is appealing his client's misdemeanor convictions for not filing tax returns in 1999, 2000 and 2001. "We still have prayers out there. We still believe in miracles. So don't send me up the