Columns are supposed to be centred not left!?

Typically, this is going to be another simple rectification however I can’t see the wood for the trees.

I use Chrome, my Blog: http://thetruejoe90.com/home looks lovely.

However, in IE the front page chucks all of the thumbnail images to the left hand side as well as other minor issues such as the FB Like plugin knackering up a little in alignments.

But the columns though, are my main headache.

Help would be greatly appreciated