There is no doubt that the Sacramento River Cats have brought an exciting and competitive brand of baseball to this city since they moved to Raley Field from Vancouver, Wash., in 2000. From the moment of arrival, the team performed and continues to perform well, winning four PCL championships and seven PCL southern division titles, as well as the Triple-A championship last season.   Another area in which this team has never struggled is putting fans in the seats. For the past nine seasons, the River Cats have led all minor league baseball in attendance, carrying about 10,000 fans a game during that span. However, attendance has dropped during the current season due to the economic situat