Sorry if I were rude, that wasn't my intention.
The thing Sypher says, I think my point has been made about that, Windows XP IS in fact NT
5.1. Secondly, the About menu of Messenger Plus! AND the webpage tell me 3.51.128. A. Madsen, that additional 0 is common for an .exe file, I don't know why that is, maybe the same thing what's causing the zeros in (!VER).