WINVER或WIN32_WINNT如何影响dumpbin所示的操作系统版本

We have an existing (old) codeline that we have recently converted from VC6 to VS2008 (converting to VS2005 along the way). After our conversion, all (or most) of our vcproj files set WINVER to 0x0500 via the Preprocessor Settings. In quite a few of our precompiled headers (typically stdafx.h), WINVER is set to 0x0500 (some still set it to 0x0400). If I use dumpbin /headers on our main exe, it shows that the Operating System Version is 5.0 (Windows 2000). We have an existing (old) codeline that we have