Schedule Defrag using Zen/ConsolOne

Hi sorry if this seems a dumb question, but what I want to know is. Is
there a way using an app object delivered via ConsoleOne and Zen to enable
a scheduled defrag of hard drives? Users do not have access to the msc or
command line, so I will need it to be delivered via the network at next
boot up. It will need to run as a scheduled task (say once a fortnight at
noon) and run as the local administrator account for anyone who’s
using the machine (our users have only user access not power or above). I
was thinking of using the dos defrag command from c:windowssystem32. It
will need to run silently behind the scenes. We have our hard drive split
in to C and D so the D drive would need to run another day with a switch.
I can do it locally no problem, but with over a hundred machines I was
hopping that it could be done globally.