It is difficult to find out about the financial status of a home if it is not yet in foreclosure. Once it is in foreclosure and is being sold via auction or REO, you can usually find the listing via their website: http://www.hud.gov/homes/homesforsale.cfm.
However, you can find the bank holding their loan by contacting your local records department, the link is below. They would be able to help you find the bank, the name of the owners, loan amount, etc., through their department or they can direct you to the office you should visit to find the information.
Good luck on finding your home! Beware that foreclosures are rarely the bargains we all think they are, there are many hidden expenses that occur during the purchase of the property and there is a increased chance that the property may require significant improvements and repair. However, if you definitely looking you should continue working with your Realtor. He should be able to provide you with more foreclosure listings and help you through the complex process. Good luck!