Security concerns with registry key "EnforceWriteProtection"   

I have an application, Ai Squared ZoomText Magnifier/Reader 9.11, which giong 
to be deployed soon. Before that, I've discovered this application added a 
registry key in session manager:

"HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\Memory Management\"
"EnforceWriteProtection" = dword:00000000

Knowing from Microsoft support person that this key is a very old key that 
was used several years ago to solve a problem with a few legacy device 
drivers. It is not supported by Microsoft and should not be used; that's why 
it is not documented anywhere in MSDN.

But, the ZoomText application must have that key in order to run. I would 
like to know by putting this key on my Windows, will there have issues to 
stability of OS or security vulnerables?

Thanks in advance for any help on my question.

date: Tue, 29 Apr 2008 19:56:00 -0700   author:   Wei-Chuan

RE: Security concerns with registry key "EnforceWriteProtection"   

Apologize for the typo for the word "SessionManager":
"HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\"
"EnforceWriteProtection" = dword:00000000

date: Tue, 29 Apr 2008 20:00:00 -0700   author:   Wei-Chuan