Signing a setup.exe for Windows 7 does work nicely on Linux.
However, when using the very same setup.exe on Windows XP or Windows 2003 Server, the signature is not accepted and a warning is display "Publisher: unknown". There isn't any tab "Digital Signature" shown in the context menu as it is on Windows 7.
Maybe a problem of our certificated?
Has anyone signed a .exe for XP successfully?