Here's a link to a quick-and-dirty how-to on how to import text files into Excel.
http://www.mrexcel.com/tip125.shtml
You'll have to do research on your own MLS systems to see how they export data. One of my sources is directed primarily at real estate agents who want to mail advertizing to potential clients, so most of the exported data consists of the owner's name, address, city, state, zip. Useless for our type of market analysis. But one entry, called "Generic export," dumps all the sale particulars--site value, sale price, sale date, GLA, DOM--all the neat stuff you can use to analyze a market.
This article shows you how to take that exported file and look at it in Note Pad to see what's in it. You may have to do that with each of the export options on your MLS before you find the export format that suits your needs and includes the information that you want. Some systems offer you the option to select the fields you want to include in your export. This is by far the best option, IMO.
Once you've got the data exported from MLS, it should be sitting in a text file on your hard drive somewhere. You can then follow the instructions on the link above to import it into Excel for analysis and charting.
While you're on the Mr. Excel site, look around at the other offerings available. This is a really good site for learning neat Excel tricks.
