In Business This Week
-- Swiss Bank will acquire a 24.9% stake in Perot Systems, for an undisclosed sum.
-- Time Warner Cable will swap its Savannah, Ga. system with Jones Intercable.
-- PP&L Resources rejected Peco Energy's $3.8 billion takeover proposal.
-- U S West couldn't agree on terms of its $800 million investment in Cablevision.EDITED BY KEITH H. HAMMONDS