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

[John Found]

> What are you writing, out of curiosity?
> 

http://fresh.flatassembler.net

It is assembly language RAD IDE, that can compile and run Linux and Windows applications both on Windows and Linux OS. This way, it is actually hybrid - uses some native Linux system calls in Linux. So, I want to natively integrate it in Linux desktop, not in the "programs" submenu of Wine.