The Pros are using the Canon G7 as their point and shoot. Take a look at that one, Olivia. I have an Canon S80 which I am very happy with - but not for Africa.
Edting - i just went and looked at it - WOW it sounds like a dream camera. I would wait for Phil's review on Dpreview and for the commentary. I would definitely consider it - it shoots RAW which is great. I don't shoot in jpg any more. That allows you to adjust bad pictures easily and good pictures come out better.
Also - there is a huge photo show coming I think in March and that is when more products are introduced so it would be worth waiting to see what will be released in it's class.