Hi,
Yes you can launch any executable you want, scheduling it when you want. There is a DOS program (run as NT Service) call 'at'.
This is a scheduling program, just type the command :
at /?
in a DOS Command. Then you will see the help. For your needs, type :
at 22:00 /every:monday,tuesday,wednesday,thursday,friday '[path_of_the_executable]'
Yannick