Technical analysis of the stock market and individual stocks including Nasdaq 100 (QQQQ), S&P 500 (SPY), AMN Healthcare Services Inc. (AHS), CDC Corp. (CHINA), Medicines Co. (MDCO), Northgate Minerals Corp. (NXG), Checkfree Corp. (CKFR), AMR Corp. (AMR), Network Appliance Inc. (NTAP)