On paper, it does look impressive. Consider what the Minnesota Vikings have added to their embattled defense since pedestrian receiver Freddie Mitchell embarrassed them and ended their season. Free agency, trades and the draft netted defensive coordinator Ted Cottrell six new starters including run stuffing nose tackle Pat Williams, pass rushing end Erasmus James, middle linebacker Sam Cowart, outside linebacker Napoleon Harris, cornerback Fred Smoot and free safety Darren Sharper. But.... even with the added talent, don?t expect a big turnaround in Minnesota?s defensive fortunes for 2005. The problem?.....Cottrell.