Hey this may be a dumb question... but the drivetime zone thingy in Microsoft Streets and Trips works in minutes. Is there any way to get the same sort of output in miles?

For instance, if you do a drivetime zone of 1 hour from a point, I'd like to get a similar graphical representation of 100 road miles from that point.

I know how to do the "radius" thingy, but that works in air miles, not road miles.

Any ideas?

Steve Jones