sterndata on "DNS Server Cannot be Found Error Need Help - Just Started"

You seem to have a good DNS record (assuming its pointing to the right place)

nslookup chicagometalsupply.com
Server:		8.8.4.4
Address:	8.8.4.4#53

Non-authoritative answer:
Name:	chicagometalsupply.com
Address: 66.90.94.243

but I see a 500 error when I try to connect to http://www.chicagometalsupply.com/homepage

so if that is the right host, there's an error on your site.