I just downloaded a pdf file for the 2005 Nav System, but I'll be damned if I know how to post it on this forum. Photobucket won't accept the pdf file. So, PM me with your email address or send me a personal note via this site, and tomorrow AM, I'll be happy to send you the file via email.
Try this, it might work through Comcast:
http://home.comcast.net/~f5fstop/H2_2005_NAV.pdf
Doesn't have a print date, but is revision B.
Maybe a 2006 NAV manual might be better (or not):
http://home.comcast.net/~f5fstop/H2_2006_NAV.pdf