Web Scraper program in C#

We need a small program written as a C# Windows application which scrapes some simple data from a business directory website. The program will allow us to input what to search for, where to search, how many pages to grab, etc. The program should support multi-threading, so we can start many searches at the same time (approx 10). Please see the attached doc for more information. We have other similar projects coming soon, so if the work is done well we will be happy to continue working with the successful bidder.