Q: My wife and I are building a house. I want to add surveillance cameras so we can see what's outside. But I also want to watch the house when we're on vacation. What do you suggest?

A: I would use Webcams designed for surveillance. Buy wireless cameras so you don't have to run cables. They are assigned an Internet protocol number. You can check them through the Internet. Such cameras run about $200. You can use them indoors or out. These cameras can record to your hard drive. Video files are big, so you'll need a really big hard drive. Look for cameras that send alerts when they detect motion. Also, look for the ability to pan and tilt the camera.

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