Mike,
Try the following in AOL and then in IE and please report the results:
www.johnhowardsanden.com
www.jhsanden.com
www.danielgreeneartist.com
www.portraitinstitute.com
www.portraitclubs.com
Interestingly, St. Louis Internet hosts the site for newground.com, but does not provide the DNS service for them. Based on that, I'm beginning to suspect it's a routing problem as opposed to DNS problem.