Mark 11.22-26 (Not sure when I'll be back to computer...)
And Jesus answered them, "Have faith in God.
"Truly, I say to you, whoever says to this mountain, 'Be taken up and cast into the sea,' and does not doubt in his heart, but believes that what he says will come to pass, it will be done for him. Therefore I tell you, whatever you ask in prayer, believe that you have received it, and it will be yours.
"And wherever you stand praying, forgive, if you have anything against anyone, so that your Father who is in heaven may forgive you your trespasses."