Design a website for a charity

I am looking for someone to help design a new friendly website for our childrens charity the Organsiation for Anti-Convulsant Syndrome (OACS). We have a website at present which needs updating but cannot get into it to do so. We need around 5 pages explaining different aspects of our chaity and the condition showing the charity logo, to be able to add and remove photos and update information at it arrives. It is needed as soon as possible as new information is at hand which needs to go out to the public. The design must be in/have in the OACS colour which is purple and be easy to find when peole use search engines.