VicRoads now has a comprehensive map with all the road based bicycle paths around the Melbourne metropolitian areas.
With increasing petrol prices by the week, why not check out the bicycle paths map and ride your bike into the office or use your bicycle as an alternative form of transport.
Not only are you reducing carbon emissions from your car, choosing to cycle will improve your health & fitness.

http://maps.vicroads.vic.gov.au/website/bikes2bfirefox/viewer.htm?Title=Bicycle%20Facilities