Please be careful if you attempt this project at home. There are power tools involved, which should inspire extra caution. Real table saws cause their share of injuries, so just imagine what could happen with this ad hoc arrangement.
Step 1: Make the table
You'll probably want to add some cross pieces. Be careful that all screws are counter sunk or counter bored. I used pine and 2-1/2" coarse-thread dry wall screws, which countersunk themselves. I used a pilot hole to prevent the plank from cracking.
Remember that you want to hang a large saw under the table when you're choosing where to put the cross pieces. Make sure there's enough room to mount and adjust the saw.