Hi grahamricho.
This is just a suggestion, but have you heard of
X10 Home Automation . You can use remote controls or your computer to operate these devices. X10 sends its information through the mains wiring of your house at high frequencies to devices that can be bought off the shelf. This means that there is no messy wiring required and these systems can be set up in minutes.
You are after 'a remote control curtain closer', so I think this may be your answer. Look at this site and decide.
http://www.cyberselect.co.uk/HomeAut...ainMotors.html

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