There is a great guy up here named Jay Martel -- aka the Child Proof Coach. He will come to your house, bring all the necessary safety devices (i.e. gates, locks, latches, etc.) and install everything for you. If you have twins and no help, you can definitely justify the cost. The actual labor fee is very reasonable and then you just pay for the products, which actually cost less through him than at a store like what was formerly The Right Start. Plus, he's really funny and nice. He won't talk you into gating and latching the entire house ... just wouldn't make sense.
So, if you are like me, a first-time mom who is not so great with a drill, give him a call.