Hi togasignman,
You'll need to run IE8 in IE7 compatibility mode to operate with Auctiva.
IE8 just emerged from Beta a few weeks ago as a Release Candidate. It should go to final release in next 90 days. Web sites will have to redo their page code to operate with the new browser, and that takes time. Most sites won't start that process until a new browser is final in its design.
Hopefully, Auctiva will give us the go-ahead when they are ready to support IE8.
Danno