Kenyan moving to Geneva

Hi everyone, I'm a Kenyan lawyer who will be moving to Geneva by the end of June to take up a position with the UN. I'll be coming over with my 5 and a half year old. Can anyone suggest good childcare options/babysitting services for a child of this age? I'm assuming most international schools there wont start till Sept. Also, any first hand experience with good international school following either the British National Curriculum (BNC) or the North American curriculum. Any other useful tips about life in Geneva in general would be great!

Rehema