Bonnie,
What I do is use one of the free mapping websites out there to generate a couple of maps. These maps generally let you zoom in and out from local roads to majour highways. From there you can just cut and past the maps into a document (e.g. MS word, PowerPoint), just print them off, or e-mail the url to your visitors.
I would have a couple of maps, each showing more detail roads the closer you get to HV.
For instance here are a series of maps, using
http://maps.google.com
Map 1 – Major Highway level in the GTA area.
http://maps.google.ca/maps?ll=43.515625 ... 3883&hl=en
Map 2 – Exits, off the 401, into Milton
http://maps.google.ca/maps?ll=43.524658 ... 5485&hl=en
Map 3 – HV street Details
http://maps.google.ca/maps?ll=43.528107 ... 8871&hl=en
Map 3 – HV street More Details
http://maps.google.ca/maps?ll=43.528381 ... 4436&hl=en
One of the best feature of these sites is the “Driving Directionsâ€