How to build and track your own index?

Anyone knows a website or an app that allows you to build and track your own index of stocks ? Does QT allow you to do that ?

 

http://www.askdavetaylor.com/how_dow_jones_industrial_djia_stock_index_calculated.html


http://www.askdavetaylor.com/create_custom_stock_market_index.html


http://www.analyzerxl.com/index.htm

 

google lol? just add equal $ amounts i guess of stock to a portfolio and track the $ value?

 

No I would like to chart the index as well like a stock.
Stockcharts.com, maybe ?