1) It would probably be better to use LinearAlgebra and the new (as of Maple 11) GraphTheory package rather than the old networks and linalg packages. In particular, networks[draw] does not indicate the direction of directed edges, while GraphTheory[DrawGraph] does. GraphTheory also has lots of other neat stuff.
2) That's Maple 10, not Maple V.10. Maple V refers to the versions of Maple that came after Maple IV and before Maple 6 (they decided at that point to quit using Roman numerals).