i've been the "bottle-feeder" for my animal rescue group for 5 years now, and am already on my third litter of this 2011 season...
That baby is only about 2 1/2 weeks old and definitely needs to be be bottlefed every 3/4 hours and stimulated to pee/poop after he eats with a warm wet cotton ball... If at all possible, please try to buy just born kitten replacement milk... Kmr often leads to diarrhea which will ultimately dehydrate him and possibly lead to death. Make sure you keep him warm... Real warm... Hot water bottle warm at all times, in a cat carrier or covered box. They cannot regulate their body temperatures at this age and are extremely vulnerable to pneumonia. Also, when making the hole in the nipple (a little bit of a challenge- i use an 18 gauge sterilized needle), you want to be able to turn the bottle upside down without it dripping out unless ever every so slightly squeezed. If the flow of milk is too quick, you can aspirate the kitten, and this too could be fatal...lastly, always err on the side of underfeeding rather then overfeeding. Good luck...
Your best bet, if you cannot find someone experienced to help you, or simply are not up for this task is to bring him to a local animal shelter...
Danielle