Craigslist RSS feed scrape

I need a Regex script that will parse out US postal addresses from a Craigslist RSS feed. Sample data looks like this: [login to view URL] These fields are not standardized on their site, addresses could exist in Title or Description fields. I know you are up for the challenge! The ASP.net/C# script needs to return as many addresses as possible (as some posts may not be able to find a match) in an array of result objects. The script also needs to find start and end dates within the text. These would also be in a non-standardized format (Nov 20, 11/20 through 11/22, 11-20-2009, November 20th, Friday 11/20 through Sunday 11/22, etc). Output would be an array of result objects with the following properties (from each "item" xml node and children): title description start date end date address url to the source post (from "rdf:about" attribute on the "item" node)