Ken,

Wall switches are simple to replace. You just need to make sure you replace it with the correct X-10 switch (i.e. 2-way or 3-way model).

Refresher course: 2-way switches are used when only one switch controls one set of lights. 3-way switches are used with two switches control the same set of lights.

As far as the Firecracker kit goes, it's a great way to experience little of what X-10 can do for only $5.90. The kit does have it's limitations though. For example, It will not do macros or timed events without additional software (not included).

But if you're wanting to get a little more serious, I would highly recommend the ActiveHome kit for starters. This kit can control timed lightings (e.g. when you're on vacation) and macros. And since it stores the info away from the computer, you can turn off your computer and still use it.

The X-10 website (www.x10.com) sells this kit for $50 and they usually throw in free stuff, discounts, and free shipping too. You can buy wall switches here as well.

Roland