Panacur, red rubber feeding tube. Treat once, then treat again in 2 weeks.
Hookworms are awful. They suck blood and can make the snake anemic.
I would not feed for the duration of the treatment. It can mess up their gut flora and possibly cause a regurgitation. I would wait until a week after the second treatment or just feed smaller meals.
Here's a good site that explains what they are and what they can do. Yay cutaneous migration! (okay.. ew)
http://www.marvistavet.com/html/body_hookworms.html