Essendon has the following schools
National Aerospace Training
Crest Aviation (My choice) 93799032
Pearsons
Wings
Interair (just started, great a/c)
Point Cook has the following
Point Cook Flying Club (division of Royal Vic Aero Club) 93951735
General Flying Services
Also take a look at Ballarat Aero Club they have quite cheap rates and good instruction.
Ang