Getting the Weather with PC companion is as easy as just typing in the name of the city in which you live (strictly for cosmetic reasons) and entering your zip code. That's all! (yes, it's just that easy). Now, if you're on dial-up like me, there's about a 20 second delay as companion fetches the information, but not bad.
The REALLY NEAT thing about using PC Companion as a weather center, is that the full version will allow you to set x10 macros which are activated by the temperature (no need for an external interface). You can set companion to scan the outdoor temperature via the internet every 2,4,6, or 8 hours and it will transmit commands based on conditionals that you set!
For example, I have heat tape attached to some pipes in my crawl space on an appliance module, when the temperature is below 15 degrees, Companion activates it for me! Very cool.
Future plans of mine include installing an attic vent fan that will activate when the temperature rises above, say 90 degrees.
The possibilities are endless.