SQL Service Pack 2 includes enhancements to the DTS service that allow you to process a cupe through a DTS package and this can the be scheduled.
However, it doesn't seem to install automatically as part of SP2!! Look in the SQL SP2 install directory and there is an executable which you have to run. Sorry I don't have any details to hand, they are in another office, but if you look on MS Knowledge Base for SQL SP2 you should find details of what to do.