Defrag on a schedule

Love the program.

Simple, quick, tells you what's going on - XP didn't tell you much, vista tells you NOTHING :angry:

I couldn't find a way to choose what kind of defrag you want on the schedule.

I'm not even sure what it does by default.

Let's say I want to do a quick dfrg on Mondays and Wednesdays and a full defrag on Sunday.

Or maybe a free space defrag...

Are there command line options that I could use to create this feature myself?