Go to www.yahoogroups.com
and search for "orphan kittens". This is a discussion and teaching group that specializes in helping people save tiny kittens. Join NOW!
You need the kitten formula. Whole milk is not an adequate substitute for mother cat's milk (just like it's not a substitute for human milk).
The Pet Ag nipples are the best. Others are OK, but not as good. And usually, the nipple the kitten eats from first is the kind they will prefer.
I've bottle fed many kittens, and yes, he will need to be fed every few hours - all day, all night.
I ended up emptying out a plastic "bills" box to carry one kitten to work. It had a slot through which you are supposed to slip the bills, and a large interior space for files, etc. I just took out all the innards, lined it with towels and took the kitten to work with me. Nobody (but my immediate area co-workers) knew anything was up.
Kittens, like infant humans, really want and need contact with another living thing. Do you have a sling? I've raised several "sling kitties", and they LOVE it.
For the kitten that I took to work with me, I wore pants, and tucked my shirt into the pants. Then I slipped the kitten inside my shirt (down near my waist) and tucked that little corner of the shirt back in. This helped the kitten regulate it's own body temperature, helped keep it warm in the overly air conditioned office. After a week of this, kitten's eyes were open, and it started crawling around and around my waist - SO FUNNY.
Good luck. Definitely go over to the Orphan Kittens group - they can give you LOTS of support.