WASHINGTON (AFP) - The man who reinvented computers and made PCs a household item in most wealthy nations, Microsoft tycoon turned philanthropist Bill Gates, is now focusing his attention on recasting the water closets (WC). The Bill and Melinda Gates Foundation is pledging millions of dollars in grants to reinvent the toilet, its director of water, sanitation and hygiene programs, Frank Rijsberman, told AFP, calling it a huge issue for Africa. The aim is to boost health in developing countries by giving the 2.6 billion people who dont have access to a WC a hygienic, safe place to go to the toilet. Speaking by phone from a pan-African conference on sanitation that opened in the Rwandan capital Kigali Tuesday, Rijsberman said only a fraction of Africans, even in large cities, are connected to sewers with a flush toilet.