I have been searching around for something that will let me do a grid of boxes like this
http://moo.com.au/portfolio/ so I can put all my different portfolio items into categories and not just have one great big gallery page of images.

I am not sure how to do this, any help would be great. I am not a developer, just a very novice user. You can check out my portfolio page herehttp://www.impressionsdesign.com.au/design-and-print...

There are a few other things I want to fix but this is the main one at the moment.

I also want help with upgrading to a newer version seamlessly if possible.