Registry Issues

I haven't played CA in some time, though my brother really wants me to f*ck around with him so I got his folder from his pc and copied it into my already existent Nexon directory using my flash drive. My problem resides in the oh-so popular " missing installation files " error, how can I get by that? I know I need to add the combat arms folder and client path in my registry, but what do I add to my registry exactly and where? Help would greatly be appreciated.

Modifying ones registry is much less dangerous then made out to be, adding a few keys won't do any damage as long as they don't interfere with your systems main command line. I'd also rather simply add a few keys then re-download CA.