Can my WINE program write to files in /usr directory?

[John Found]

In my program I want to copy some files in the /usr and other system directories. Is it possible from WINE program and how?

In the FAQ I read:
> /!\ NEVER run Wine as root! Doing so gives Windows programs (and
> viruses) full access to your computer and every piece of media
> attached to it. Running with sudo also has these same risks but with
> the added bonus of breaking the permissions on your ~/.wine folder
> in the process. If you have run Wine with sudo you need to fix the
> permission errors as described in the next question, and then run
> winecfg to set Wine up again. You should always run Wine as the
> normal user you use to login.

Is it so important?