Computer Lighting control?

I am setting up my new fully functional lan room at the moment and I am thinking about using my computer to control the lighting systems and possibly the blinds etc

Sadly I have no idea how to go about such a thing.... I think it will be awsome If I can pull it off... Any ideas?

 

Smarthome sells USB-based home automation interfaces for controlling lights, appliances, heating/air conditioning systems and alarm systems. The devices include on-board processing for downloading timers and macros.

It doesn't say anything about controlling the blinds, but it might help you think in the right direction,

Greetings

Marcel

 

This is the site that I found when I was looking, but unfortuatly I am based in the UK and those are all American appliances

 

Thanks alot! I knew I needed X10, but I didnt know where to get it in the UK. But now I do! thankyou