Have you tried http://www.realtytrac.com?
There is a monthly access fee for use of the site ($50) but it contains excellent data on current foreclosures and pre-foreclosures. Many people use it for a few months as a resource while they are house hunting. Bear in mind, however, if you use a realtor they would be able to provide you with the same type of information without the cost of a monthly fee. However, if you were interested in looking for information prior to committing to an agent I would recommend that site.