Total Noob question (sorry)...

Just got my first Razer product (the Naga Pro), and I'm having all sorts of fun configuring it through Synapse. I've got some of it worked out, but I use Chrome as my default browser and I was wondering if there's a way to map the "Open in New Tab/New Window" commands to the side buttons. I can't see any obvious way to do it through Synapse, so a little help would be appreciated.