You did a very kind thing by helping this baby bunny. However, if you are not trained in wildlife rehabilitation, you should have the rabbit taken to an expert. This is not to say that you would not do a good job, but in order for the bunny to recieve optimum care, nutrition, and as well as to be sucessfully released back into the wild, it would be best for him/her to go to a rehabilitator.There are a few ways you could find someone in your area. First, call your local veterinarian's office - the usually have a list of local rehabers. You could also look in your yellow pages - wildlife control/rehabilitation would be a good place to start. Finally, you could visit the following site:
http://www.nwrawildlife.org/page.asp?ID=111Most rehabers don't charge fees, but they do operate on donations.Good luck!