Shape5

Not really sure where to put this...

I have taken the extra files from the Virtuemart template and used them with a different template.

I just have 1 issue.  Where to I centre the products and categories on the screen? 
I can see in Firebug that the line is in html.css

But I have got a feeling that this is auto created by the browser from other files???

Sorry I'm not much of a css buff!

Basically I need this:  http://www.speedfreekz.co.uk/tamiya-hop-ups.html

to have the products centred on the screen