Roberto,

> > Under Windows NT/2000/XP there is a utility named AT.EXE which sets up
> > scheduled tasks. Similar to cron.

If you want to have a graphical surface for at you might have a look at
winAt:

http://www.uni-karlsruhe.de/~za151/down.html

> > We use it to run GBAK to backup the database on a scheduled basis.

>
> Great idea, could you send me the syntax of it?

If you need the syntax for gbak have a look in the Interbase docs.
In the operations guide you should find a chapter for this topic.

Luc.