Thanks for your input guys!

Right, sorry I should have mentioned it is the facelift version (mk1.5),
5 door but with electric front windows and manual winder rear ones.
I don't care too much about the rear ones, it would cost too much and take alot of time to install electric window mod etc...

So I believe that the facelifted Ghia and ST170 have the global closing feature.

I just thought it would be cool to open the front windows with the key fob,
I love that type of gadgetry on cars and I am trying to modernise my Focus
a little.

Putting the key in the lock and turning it doesn't work on the Focus. But I know it works on Vauxhall Astras as my dad had a few

Only the drivers side has "one touch" so that is not likely to work.

I will try and do some more research on this... but if it ends up costing more than the price of a relay, then i will be slightly disappointed