Create Subsite

Hopefully this is an easy question, we post a lot of news on our gaming related site and what I’m looking to do is create a mini subsite inside the main site for events and the like.

So for gamescom coming up I want to have an address of http://www.lazygamer.net/gamescom2012

Now this subsite will have the same header section but no sidebar and I need access to that all important loop.

I know I can do it by creating a subfolder of gamescom2012 and adding the index.php into that. But is there a way to make it dynamic?

If I tag a post with a gamescom2012 category can I create a category handling file that will do this dynamically?

Mainly because I want the same subsite for any events that we cover and like the name says we’re lazy 😉