How to make DRL lights come on with unlock?

I want to make my DRL lights or Headlights come on when i unlock my car ( so with my dome light) my DRL lights are connected to my side lights so i'd need to have my side lights on when i'm driving.
Any advice on how to do this would be great
Its a Ford Mondeo Mk 3 if thats any help.How to make DRL lights come on with unlock

It's a bit complicated as the interior light is on a dimmer.
If you can solder, quite easy:

You need a p-channel FET that can take the current drawn by the DRL
a FET has 3 leads,
source connect to 12v
gate connect to the interior light black/blue wire or GEM (connector 427 pin3 )
drain connect to the DRL

This should work for the DRL, if you want the headlights on as well, then feed into the headlight relay
http://cpc.farnell.com/international-rectifier/irf9520npbf/mosfet-p-to-220/dp/SC08219

On modern cars this is all controlled by the computer. If you can find someone who can do programming of the cars computer then you have a chance.
If not then you are stuck. Modern cars are not controlled like old cars.