data extraction and charting

I need to have historical data extracted from a public website and put into a database that I can then extract data from and chart with some sort of charting application. Whether it is off the chart software, freeware, excel I am indifferent. ## Deliverables i know there will be some questions but should be simple once understood, this program will be on a home desktop with a 2 TB terrastation server, I would like oit ot be written as basic as possible so that i may manipulate and look at data in many different ways. So to sum it up i need to look at pricing points, hours, date or date ranges, LMP,MCC,MLC, DA or RT multi days and multi axis