Wix Force Overwrite of files for One Folder

I have several directories and files as part of my installation. One of the folders I want to replace the contents always and the remaining follow the default Wix behavior. I noticed I can setup REINSTALLMODE to "amus", but does this apply to the entire package?

http://ms开发者_运维百科dn.microsoft.com/en-us/library/aa371182(v=VS.85).aspx

http://wix.mindcapers.com/wiki/MSIExec

How do I use

<Property Id="REINSTALLMODE" Value="amus" />

on a single directory or component?

Windows Installer doesn't support doing that.

Windows Installer might not "support" that, but it certainly can be done with version lying.