I agree with tonydal. 23 Rfb1 builds up pressure on your opponent's king. :)
Analysis, if you would.

from what i see, i think it was more likely a draw.. although you had a passed pawn, but it's being closely watched.. and the other pieces are all defended well..
but if (and that's a big if looking at your opponent's rating) he screws up, your passed pawn would eventually prove decisive..
that's what i see..
Thanks to all of your comments, I see that Knight sac now, looks pretty depressing (for my poor opponent). Thank you also, Narz, for that vote of confidence. Cena, I agree with you that it was most likely a draw, if his time hadn't run out. As it is, another thanks to NM Tonydal, for taking the time to analyze my game.
This is a game I just played in a tournament, I would like to know how I did, and if I could have played better.