Two of the cables will be the lighting ring. Hence anything after it on the ring (front room) is now disconnected. The other two cables will (in theory) come from the switches.
If you're lucky the colours of the wires in the switch cables may be different (perhaps yellow & blue wires as opposed to red & black). The ring wires are connected like for like. The neutral from the ring straight to goes to the light. The live from the ring goes through the switches to the light.
CALL AN EXPERT IN!!
Also consider doing a class - then the expert won't fleece you :)
Rich, October 2006