In addition to the previous answer, in the UK, in order to comply with Building Regs that sort of job MUST be done or supervised by a Competent Person - which frankly you are not. (Legally or practically.)
The advice that you have been given about getting an electrician is good. Do it quickly before someone is killed or you have a fire. BTW if the latter, your insurance will almost certainly not be valid.
V, October 2008