Does anybody know how to copy dll to system32

i need to copy a debughelp.dll to system32, but have to know it's winnt/system32 or windows/system32.

can anyone show me how to do it? thanks!

Use $SYSDIR.

thank you for answer my questions

if use $sysdir, do we need to set the environment variable? i found no default $sysdir in my pc.

It's unrelated to your computer's environment variables. It's a special NSIS variable pointing to your system directory.

Thank you very much!

I found it.