Buying Short Sale With No Money?

[Tommy Danner]

Some background....I own a primary residence/property Im currently building on and also saved to purchase a garage to start my own business. That leaves my fiance to be the one to try to get financing for this. 

Im looking at a short sale thats listed for $42k. If we pool what we have right now, we may be at $15k. Does a short sale require the full amount up front? If so. how can I get financed? Better chance with a small local bank? My fiance is part of a credit union too. Will either finance the sale, or even finance some of the rehab costs so we can start working on it asap?

Side note, maybe the BP Investing with Low or No Money Down book would answer this... ,)