Advertising firm WPP is extending its reach in sub-Saharan Africa through the creation of two joint ventures in Ghana with local operators.WPP's wholly owned subsidiary, Ogilvy, and Scangroup, one of Africa's leading marketing services groups in which WPP also owns a minority stake, will jointly create two new advertising firms in Ghana.Scanad Ghana will take control of Media Majique & Research Systems while Ogilvy Ghana will assume control of Ogilvy Africa Media. Both countries are currently majority owned by Reginald Laryea, who will retain a minority stake in both businesses. Laryea has also been appointed chairman of Ogilvy Ghana. --jh