Ok,
1) it doesn't really matter where you unzip it to. Probably the most practical place is iSiloX's program path itself. For me, that is "C:\Program Files\iSiloX". All you have to make sure is that when you start iSiloX, you go to the menu, File->Open and browse to wcc105.ixl.
2) Customization is different from case to case. All channels that can be customized are marked with a '+' in the list. The example I gave in the list for each of those channels should serve you as a template for your own needs. In the concrete case,
Hollywood.com: Go on the list entry->right click mouse button, choose tab Source, right click on the url->edit. You find
http://www.hollywood.com/avantgo....ius=10. Here change the SearchZip to your Zip.
WeatherChannel: Again you need to change the url similar like for Hollywood. But first, with your web browser go to
http://wireless.weather.com/avantgo/ . Enter the Zip or Cityname that you are interested in. When you come to the weather report page, mark the url. Now, back in iSiloX, go to the same tape like for Hollywood to change the Source url, only this time for Weather.com. Replace the url with the one that you got from your web browser.
That should do. You can copy the weather.com list entry in iSiloX using CTRL+C and CTRL+V and change the url for each case in order to get various weather reports at the same time.
3) Some people have done that successfully using the Windows Scheduler. Use the search feature on this forum to find more about the Scheduler.
-- Alex