I was just there yesterday, and then tried a couple of hours later and the page wouldn't load. I never have issues like this... and even tried multiple browsers, clearing cache, rebooting, getting to it through Google.
Deanna, I had that problem there a few months ago when they blocked my IP addy for some reason. I called my ISP and had them reset my IP, and that worked. You may also ask them at DSA to contact their host and ask them to unblock your IP addy (it'll take them like 2 sec to do a live chat with their host and provide them with your IP address). That should get you fixed right up.