Drospy isn't a very infectious desease as far as deseases go but it can be very lethal and not many people can cure it. I have cured it before though and these are the steps i took towards treating it;
a. Move the sick fish to a breeding net or quarentine tank and do a 30% water change.
b. Buy some anti internal bacteria med by Interpet and treat the fish with it.
c. Feed the fish mostly vegetable based foods like algae wafers/tablets or shelled cooked peas etc; the fish may not seem interested at first but it will eat it- you can try to encourage it to eat the vegie based foods by cutting down on its other foods.
The vegetable based foods helps it maintain a better digestive system as constipation in fish can often cause dropsy or worsen it.
d. You may not see any improvement for a week but you will know the med and foods are working if the desease stops progressing.
e. Try to maintain top-notch water quality conditions as this will improve the fish's chances of over coming the desease.
f. If there is no improvment after 11days, i suggest you put the fish down as it is very unlikely it will overcome the desease after that amount of time.
Hope this info helps a little and good luck
/www.mushi.petfish.net/dropsy.html
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I don't have the heart to kill my cute fishies. I'm going to wait a few days... but they are looking bad. It is so sad to actually realize you cant help your fish 
