Polyvore html code & center

Every time I copy and paste the html code from my Polyvore account it comes up left justified. When I add <cemter> to either end of the code and change to visual it shows up centered, but after I save draft and view it’s back left justified again.

I found tricks to manage this, but it’s a bit of a pain. Is there a better way to do this? I’m by no means competent with html code, so please keep answers as simple as possible.

Thanks,
Mo

<div style=”position:relative;width:600px;height:600px;”><img width=”600″ alt=”Modern Neutral” src=”http://cfc.polyvoreimg.com/cgi/img-set/.sig/jzsOfGhnW2n7N+qKgBbItQ/cid/35159063/id/GnQauey-4BGXT98MtbkJ_A/size/c600x600.jpg&#8221; title=”Modern Neutral” height=”600″ border=”0″ /></div>
<div><small>Modern Neutral by mofunk featuring a trench coat</small></div>