Scheduled tasks in SCO Unix 5.0.5

Hi.
Am a unix 5.o.5 user. I need to schedule a program to be running everyday at 12 midnight. How do i proceed. I need help.

Also what is the maximum size that sco unix can conveninetly handle. I keep getting this message. "Filesystem greater than device which it is curently located. Pls backup and recreate."

Thanks

Help needed urgently!!!!!!

For the first question:
man cron
man crontab

Cheers
ZB

i'm not familiar with the maximum size that sco can handle but this error looks more like you are trying to fit a large man into a little girl's dress --- your filesystem cannot be bigger than your alloted disk space (i.e., a 10GB disk drive cannot hold a 20GB filesystem) ...