Just to let you know, this can be done without the harness that's talked about on the coding forum.
To get the halogen light angel eyes as DRL (on all the time) and still working as welcome lights, the following lines need to be looked at in the NFRM.
The red ones are the lines I had to change but I've copied the others just to make sure. Once this is done, just go into the OBC and enable the DRL - Voila!
Note that this is for cars with halogen LCI angel eyes, I'm not sure of the procedure for cars with Xenon lights but I believe it's roughly similar.
Did my main beam flash on alarm, beep on lock & unlock, digital speed in OBC, closing window doesn't stop when opening door and digital speed correction while I was at it.