This one is a bit of a journey and doesn't really use much traditional AutoCAD but it'll get the job done.
We are going to look at using AutoCAD core console. Below is a screencast of the process.
First you need to set up your files in a folder so as to only impact the files you want to add the xrefs to. It will apply it to every dwg in a folder so make sure you do due diligence to only affect the files you want.
Next you are going to need to create two files. One will be a bat file which will do the Batch operation and the other will be a script file that will handle the xref application. I will try to attach the two files. (i tried attaching the files but the forum didnt like the .bat and .scr extension so i have changed them to text. Just remove the .txt extension and they should be good to go)
You will need to tailor the files to meet your conditions such as file localisations, script locations and the location of your core console application. you may have to tinker in the script file as well if you need the xref at a location different than 0,0.
Once the foot work is done, its almost magical to see it run through saving you the hours of opening each file and applying the xref. Its a kind daunting task if you are not used to this sort of thing but its really not to bad once you get in it. I have also done a walk though on my webpage though its not specific to your needs and i tend to be crass there.
CADnoob
