Automate OnLine Archive on Windows NT

Hi all, Has anyone successfully used "at" command on Windows NT 3.51 to schedule "ontape -s" to run at a specified time? We keep get " Must be dbsa to run this program.", and Informix Tech Support said they don't really support batch backup on either NT or Unix platform. We would like to know how other NT users handle Online archive. And if you are able to use "at" to do "ontape -s", is your ODS installation configuration "Domain Install" or "Local install"? Operating System: Windows NT 3.51 Informix OnLine: 7.20.TC2 Installation Configuration: Domain Install (we know this is not supported, just want to give it a try) The user who schedule "at" is informix, and is a local administrators group member, also a member of Informix-Admin ( because of Domain Install, this is a global group). Thanks for any help, Zhenling Sun zsun@b500dbss.med.osd.mil