Dear Deirdss
i understand you concern.there is nothing to fear about picking a taxi at the airport.there are many and have a yellow line running accross them.
However if you want i can orgnise for you to be picked by a reputable company for tours and travel here in Nairobi they will sho you there cards so that you do not have to be afraid.
the tour and travel company wil make sure that your flight to kisumu is well taken care of at no extra cost If you are intrested conduct me and let me know your budget for a hotel in Nairobi.
please USE SEND ME AN EMAIL under your post
miriam