(imported comment written by jeremylam)
If you are referring to the “Power Off Computers” task in the “BES Power Management” site, that site is deprecated. But you can make a copy of the existing task and remove the following relevance:
name of operating system != “Win7”
but I highly recommend that you contact licensing to switch to the new version (the site name is just “Power Management”). It has a lot of new features, and not just Windows 7 support. More information is available at:
http://forum.bigfix.com/viewtopic.php?pid=23421