In addition, Windows XP incorporates a sophisticated instant messaging system along with software for playing digital music and watching videos. Once again this Is consistent with Microsoft's basic strategy of relying on its dominant Windows operating system to leverage its way into new markets. by bundling a media player and an instant messaging system into Windows, Microsoft is open to the same accusations browser, both of these products are offered or sold separately by Microsoft competitors. Is Microsoft once again using its operating system to extend its monopolistic power? Let us consider each of these controversial XP features.