Fredd, this list may not be completely exhaustive (it doesn't indicate any places in Colorado for instance), but Rogers does indicate areas in the US where calls cost $4 per minute:
http://www.shoprogers.com/store/wire...s.asp#coverage
(Click on "View the areas that are excluded" about halfway down the page.) Unfortunately, that page does not acknowledge the incoming phone call problem you experienced, but perhaps it can help you be better prepared to avoid the excessive outgoing call charges.
[This message has been edited by CanuckFlyer (edited 08-27-2003).]