Theland, you need to do some homework. The word 'nirvana' comes from Sanskrit and means 'extinction', but in Buddhism it means extinction of passion, hatred, anger, ignorance, delusion and earthly suffering. Buddhism is a religion older than Christianity and nirvana is the highest spiritual level a person can attain.
Whilst Buddhism doesn't threaten people with eternal damnation to hell if they don't repent their 'sins' through Jesus Christ, it does address wrong-doing in as much as its followers believe they are reincarnated time and time again, learning new lessons in each new life, in the process of achieving that for which they strive - perfect spiritual enlightenment - nirvana.
As you know, I believe man, and the church, have twisted Jesus's message into something it wasn't meant to be, and it wouldn't surprise me if he had studied Buddhism at some time - perhaps during all those years of his youth and early adulthood when we hear nothing of him. Could the Wise Men from the east who visited at his birth have had a hand in his education? I don't know, and neither does anyone else, but it's possible. However, I expect you'd find that idea sad and absurd too.