OK...just as i thought.
I'm actually doing that now with regional sth coast nsw tv.
I have dual digital tuners and after I got my new anntennae replaced after a storm i was able to pick up wollongong etc (i'm in sydney) - good for watching cricket at scg when it's sold out

.
Anyway I've setup the guide to grab in TVHarvest by adding an additional guide key and changing the data to grab the south coast data..goto ninemsn and see what url is the region.
To add a guidekey just copy and paste the original and add a "1" to the guidekey
e.g. <add key="GuideURL1" value="htt.....etc