When I went to Ghana the preferred gesture was a normal handshake, followed by swiftly removing the hand and clicking your fingers on the other's fingertips as you do so. I didn't even attempt this because it seems like a ridiculously white negro thing for me to do, even if I could have done it succesfully which I doubt I could. Luckily it starts off the same as a normal handshake, and if you grab the others hand firmly for a period of a few seconds or so, they realise that you aren't going to attempt the click, which saves embarressment. It did make me feel a bit like a colonial overseer at times, but I'd rather be Dr Livingstone than Tim Westwood.
hahahaha