my boa used to do that, and one of my corns get's a little fiesty sometimes too. but, as everyone is saying, normal handling is key. some tips: 1)wash your hands before, and after, you handle your snake(s). sometimes they can get the scent of food from something you handled earlier. so, make sure they're clean, preferably with a non-smelly soap. 2) when they're new, i put a sock in the viv. one i wore that day. it smells like me, and i leave it in there for a few days. the normal period where you leave them to get used to their surroundings. that can help, sometimes. 3) when you do start handling them, and they're biting you, let them bite. but, DO NOT pull away. their teeth can come with you. which is not a good thing. they're tiny so their bite doesn't hurt. i've had worse splinters!

they'll get over the biting thing very soon, and they should get used to your smell comming in the viv, not rubber gloves so much. i also would suggest handling them a couple of times in the day. maybe one in the am, and one time in the pm. leave your hand in there a while, let them get used to it, then take them out. don't just reach in there and grab them away from their homes! the last time a big hand came out of the sky and grabbed me, i didn't like it so much!!! :crazy02:
there are a few tips for handling new snakes. unless they're poisionous, then just don't handle them.
marc