centering my blog

hi there, i am using the ub_swiss 0.1 by Anonymous theme and have been having trouble shifting my content to the centre of the page, whereas it is left justified at present (you can see it here)…

http://www.nicshonfeld.com/blog/

i would like to simply shift everything into the center whilst keeping the text and header in the same positions in relation to the photos…so, centered, but still to the left hand side of the centered content.

any help greatly appreciated!!