how to change Wine operating system emulation with no need to use winecfg

[Mgr. Janusz Chmiel]

Because Winecfg run by using Wine, it is impossible to work with it 
without OCR function, because screen reader compatible with Wine do not 
exist. So please, which registry keys or other values should I change to 
set Wine emulation to Windows XP from default Windows 7?
I need to test some screen readers which work differently in XP mode 
than in Windows 7 mode.
Including Windows light translingual. it is written in C++ with not many 
depednecies.
So I need to try it.
NVDA will never work, because it depend on many Microsoft visual C 
redistributable and on their registry values. And on UI automation when 
Windows is Vista or newer.
Sure, NVDA can also work differently when operating system is Windows 
XP. But also in those cases, there are issues with missing oleacc.dll 
MSAA specific functions.