Both of the above posts are quite true.
First step would to be find out what you can about the animals. What breeds? What ages? Are they registered? If so, do you have their papers? Are they broke?
Next step would be to take good pictures. Find a friend or family member who has handled horses, and take the time to catch them. Bathe them up if you can muster the courage. Take shots of the horses standing squarely from both sides, the front, the backside, and their faces. Just please do bring with you a friend who has handled horses before - even a neighbor of your uncle might be willing to help. Horse people are good people, usually, anyway. ;]
Next, find a site like DreamHorse.com - Horses for Sale - Dream Horse Classifieds
, Horses for Sale - EquineHits Horse Classifieds
, etc. and post descriptive ads. Explain your situation and let them know that a good home comes before money. Then set dates where interested individuals can come and meet and greet.
Best of luck. This forum has a Horses For Sale section, so post them here too! You might find a forum member interested. :]