Download winntwms (Windows Messaging for NT/2000/XP) from Novell:
http://support.novell.com/servlet/filedown...b/winntwms.exe/You'll end up with winntwms.exe in some directory - mine is in D:\XPCD\$OEM$\$1\Install\WMS
Extract that file and you get two separate files, NTWMS.EXE and WINNTWMS.TXT. Delete the text file because you don't need it. Now, you can install Windows Messaging silently in your batch file (or however you do it) by running "NTWMS.EXE /Q".
Hope that helps!
-Gunny