Telus Mobility MotoQ and ActiveSync Against Exchange 2003 SP2.  How do you get ActiveSync to work!?

Place the following 4 files in /Storage on the device:

secpolicies.cab from http://direct.motorola.com/ENG/q-certificate-patch.asp?Country=CND&language=ENS&productid=30546

VZW_SpAddCert.exe from http://support.microsoft.com/kb/841060 via http://motorola.custhelp.com/cgi-bin/motorola.cfg/php/enduser/std_adp.php?p_faqid=12932&p_topview=1

Your root certificate .cer file, packaged into CAB format, via http://blogs.msdn.com/windowsmobile/archive/2006/01/28/making_a_root_cert_cab_file.aspx

Same root certificate, in simple .CER format.

Run secpolicies, then the packaged CAB, then use the VZW... utility to import all your root certificates as well.  Reboot as instructed.

Server side changes:

If you have a single Exchange 2003 server, http://support.microsoft.com/kb/817379/.  I followed these ripped off instructions: http://www.petri.co.il/problems_with_forms_based_authentication_and_ssl_in_activesync.htm

Ensure ISA server doesn't block the new directory you created, and that it publishes it correctly.

Next, go into Exchange System Manager and ensure Push is enabled.  (General, Global Settings, Mobile Settings, Properties, and check off all applicable boxes.)  Ensure also that the user is permitted to access these functions.

HTTP and HTTPS access is necessary to directories - read the access path details CAREFULLY and see also http://msexchangeteam.com/archive/2006/04/03/424028.aspx .