Give this a look...
Good hunting, Dunes
Subscriptions to local papers in your counties of interest will being you most of the listings that you want to know about.
I agree with Jefferson, the information is also out there for free. Realty Trac aggregates all that publicly free information. If you want to pay for that service, Realty Trac will be happy to process your payment.
I also agree with Scott, having too many listings too sort through is very time consuming. Its like looking for a needle in a hay stack.
Preforeclosure listing information is time consuming and sometimes frustrating as Realty Trac picks up all homes in default and puts them on their site. The seller still can negotiate with the bank or bring their mortgage current to avoid teh foreclosure. In most cases they owe more than the house is worth and can not sell. As they are already in default, a short sale is unlikely due to time constraints. Your best bet is to check the auction postings themselves for your county. You can get form the Sherriff or the registry of deeds. In most areas there usually is a periodical that lists weekly or monthly auctions for you and a small subscription fee of course. You can also check your papers for the leading auctioners and check their web sites daily for auctions. Good luck with your search.
Your County will have a Web site, with the latest Sheriff Sale Auctions. I'd stay away from realtytrac. It's expensive, often outdated, and many people have trouble when they try to cancel.
Most really good foreclosure info is free. If you're interested in this stuff, you'll want to learn how to do your own rough title searches to find what liens a property has.