Michaelo

It sounds simple but theres a lot involved. Lets assume you PC is connected 24/7 A simple method is to set up a web server (Use EasyPHP). This will allow you to view your site (home based web site that is). Because you are using php script (EasyPHP) which is akin to C you can click on a button on you home page and write a function to send data to the com port. Well its a start. Mike

Try this one. http://www.electronic-circuits-diagrams.com/alarmsimages/alarmsckt12.shtml There are a lot of them out there... search google using "car alarm + circuit" etc. Mike