Here are some links to use when researching stocks:
Better Investing
Log in and use the Stock Selection Guide or one of their other many tools.
MSN Money
Lots of good information on this site. Enter a stock symbol in the box at the top of the screen. Select more information from the choices in the top menu.
Yahoo! Finance
Stock screener, company fundamentals, financial statements, and much more.
FinViz – Financial Visualizations
Tons of information including a stock screener and map showing how each sector, industry, and stock has done over a selected time period. See the “Guided tour” button near the bottom of the home page for an overview of the site.