HELP! Baby bunny, still nursing, would like advice from experienced breeders?

I realize the typical "omg, I found a bunny in my yard what do I do?!" sounds silly, so let me start off saying that this isn't exactly the case. I'm not clueless, I'm experienced with adult rabbits, and I have a willing support group.
The cat brought in a baby rabbit in his mouth, but it appears unharmed. It is small enough it needs to be fed (successfully fed it kitten meal replacement formula once already, will again in a moment).
I am prepared to house it, feed it as needed (I'll try every 3 hours until I get better info), and raise it.

My question to YOU is: What can I do to make this process easier?! This was all dumped on me rather fast, and I'm not experienced with hand-feeding baby rabbits.

Your help is appreciated!

So far, so good! Thank you!

I now have two (bad kitty caught another). They are eating from the syrenge without any problems. They have their eyes wide open, and get along quite well, so I'm estimating they are 4 wks old (give or take).

Please keep submitting answers!

Alot of it rests on exactly how old the baby bunny is. I realise this is difficult with a wild rabbit as it can be difficult to gauge, but if the rabbit has it's eyes open (which to wander off from the nest I can only presume it has) then it must be around 2 or so weeks of age.
Female rabbits in the wild usually only nurse their young for around 2 - 3 hours each day, very usually under the cover of darkness. This is to help ensure the survival of the babies by making sure that predators do not know they are there.
As the baby gets a bit older you'll find that he/she will start taking solids, in another week or two he'll start taking his first nibbles of solid food. Until then you should offer him a tiny bit of milk every 2 -3 hours, and especially check on him at night as this is when it's most likely he'll be used to feeding. Ensure that the milk that you give him is a suitable milk replacer made for puppies and kittens, and warm it just slightly and offer it to him slowly. Leave a small amount of dry food in there too, this can also be softened by using a bit of the milk replacer to make it more palatable to him, and a small dish of water would also be acceptable to have in there (make sure there is no chance of him falling in and drowning).
You can buy feeding syringes from most pet shops, and this will help to make life a little easier for you when offering it to him (if you haven't already got some already).
Make sure that he's also kept warm, and give him plenty of bedding to snuggle up into. He may not neccessarily need a heat mat at this stage, just plenty of bedding to snuggle down into.
Hope this helps.

Do you have any rabbits that are nursing? if you do they might adopt the baby. They only drink about a few drops every 3 to 4 hours. you have to be careful it is easy to drown them by accident. You need to keep the it warm. try putting it in a small box. 1st place a heating pad on the bottom of the box set it on medium heat. Then place a towel over OR wrap it around the pad. try to make it like a nest.