I just read through this and I came away impressed. Not a bad article at all and having a backup of ones registry is well, just smart!
I am seriously looking into this especially since one of my neighbors had this basement flood (his pipes burst) as the heater went out. His basement basically turned into an ice rink all while he was on vacation. If I had something that would email me when the temp or a system went down, even remotely, I could call for help.
This is a really good article.
Most folks use the 'Find' command from the Windows Search box (solid way to do it). But, you can also use the 'Find' command from the command prompt and if you use Windows Server Core, this is a VERY thing to know.