Originally posted by jeppe
Now, at the command prompt type (without the brackets]:

at HH:MM [path and filename of file to run]

Computer answers that a new scheduled task has been added and its ID. To find out more on the at command type "at ?".

Note that this will run as background process e.g. produce no visual output.
If you use the AT command and want it to have a visual output then use the interactive switch like this:

AT 16:00 /interactive /every:M,T,W,Th,F,S,Su c:\mypath\myprogram.exe

Remember that the time must be in the 24h form and that the hour and minutes must be separated by a colon whatever regional settings you have.

Best regards