Here's my best advice to you, given what you've told me.

Go out and buy a "sweaterbox" style sterilite tub, available at any target or walmart. Something like this: http://www.sterilite.com/Category.ht...ctCategory=38#

The 15 or 32qt will fine depending on the size of you snake. If he's over 24" long, go for the 32qt.

Fill the tub with newsprint or aspen shavings, use a water bowl, and place 2 hides on both sides of the tub. Hides can be the elaborate caves at pet stores or upside down plastic bowls with entrance holes cut into them. You want the hides to be tight...he should have to cram himself in them - trust me, they love small hides.

Next, take your heat pad off of the tank and place it under 1/3 on one side of the tub. Heat pads are notorious for overheating, so you may want to consider getting a thermostat or a dimmer to control it.

You want the floor temp of one side of the tub to be 92-94, the other to be 82-84.

Let him settle in to this setup for a week or two, don't handle him AT ALL, and then offer a hopper sized or small adult mouse, if thats what he was eating before.