Fully supersymmetric CP violation in K and B systems

We analyze CP Violation in supersymmetric extensions of the standard model with heavy scalar fermions of the first two generations. Neglecting interge nerational mixing in the sfermion mass matrices and thus considering only c hargino, charged Higgs-boson, and W-boson diagrams we show that it is possi ble to fully account for CP violation in the kaon system even in the absenc e of the standard CKM phase. This opens new possibilities for large supersy mmetric contributions to CP violation in the B system.