Dia Shapes for Finite State Machine

[Leonid Lastovkin <parubok gmail com>]

I would like to create a Finite State Machine in Dia,
much like the one shown in the image below:
http://www.csee.umbc.edu/~squire/images/451-f2.jpg

The shapes required for this are:
1. start state marker (an arrow)
2. regular state (a circle inside of which one can write text)
3. final state (like regular state, but a double circle)
Has anyone created those shapes aready?

Also,
is there a way to use greek letters in dia?

Regards,
-- 
Leonid Lastovkin