I was going to say check that either your router and/or new switch support auto-crossover (aka auto MDI/MDI-X) or that the new switch has an uplink port. If neither support cross over and if the switch doesn't have an uplink port, then you would have also needed an Ethernet cross-over cable to connect the router and the new switch - a regular straight-through Ethernet cable (that you would use to connect your PC to the switch) wouldn't do.
I've just looked at the Dabs site though and if I'm correct in assuming you've ordered
this switch, then you should be OK without a cross-over cable. Their description states "Furthermore, each port can be used as an uplink, meaning that you can easily connect other hubs or switches to create an even bigger network."
Ben