Sorry but could someone better explain what these instructions mean?
OldNewExplorer can override UIFILES from most files loaded by explorer.exe.
To take advantage of this, add UIFILES to your ShellStyle.dll named the following way:
SHELL32.DLL UIFILE 23 -> SHELLSTYLE.DLL SHELL32_UIFILE 23
EXPLORERFRAME.DLL UIFILE 20482 -> SHELLSTYLE.DLL EXPLORERFRAME_UIFILE 20482
WARNING: custom resource types are not loaded from ShellStyle.dll if it has MUI resource pair.
Merge it with mui file and remove MUI resource.