I just tried the site on three different machines using three different browsers (even one set to keep no cache, no history and to check for new versions of a page on every visit to that page) and I didn't have any problems accessing OWI's website.
The error message you're getting doesn't sound like a message from OWI's web server (why would they give suggestions for typing a url like
http://www.aol.com?). Are you sure you aren't going through a proxy server?