using the MAPI controls with NT Scheduler (AT) and/or WINAT

I've written a program in VB6 that traverses an NT network and e-mails a report of its findings. The program works great when invoked manually. However, if I set it up to run at a specified date/time using NT Scheduler (via AT commands or WINAT) the program bombs on the e-mail portion. Specifically, I get an error 36062 "Not Supported" when the SignOn method is used (with the MAPI Session Control). I've tried logging the Scheduler service in using a user account I know has a valid e-mail account on our system, but this did not work. I'm sending the e-mail internally only (not over the Internet), and am using Exchange. Any suggestions/ideas to get around this would be greatly appreciated.


Thanks...