Question : how do i schedule a defrag with a log-on script?

I have a log-on script that installs software on my clients machines on SBS 2003 domain. it is possible to schedule a defrag to happen after they log off ? or better yet make it happen at night at a given time when the computer is NOT logged into.

Answer : how do i schedule a defrag with a log-on script?

i can highly recommend the www.kessels.com/Jkdefrag/ program for defraggin and optimising the files on a server and do so on a regular basis. It can be run from command line and gives full instructions on how to do so and how to optimise its configuration.

internal windows defrag could be run at a logon from comand line/script  just by "defrag c: -f"