America's tennis queen Serena Jameka Williams is expected to arrive in the country Thursday from South Africa, where she began her goodwill tour to Africa.

Serena is touring schools in Africa to donate computers from one of her sponsors, the Hewlett-Packard Company.

She withdrew from the Sony Ericsson championships on Friday with a stomach injury.

Williams, who first visited Africa in 2006 with stops in Senegal and Ghana, said that it will be a great opportunity for children to have the opportunity to learn and use computers, adding that it will expose them more to the happenings around the world.

Her sister Venus will however not accompany her on the tour.

Serena has won nine grand slam titles in her career.