Make sure that you install the software once you've downloaded it. It is recommended that you purchase the current RealPlayer software for best performance. The RealPlayer website is updated and changed frequently and the free download is sometimes moved, so these instructions may soon be out of date. You can either shut down any unused programs that are open and taking up processor power or memory, or upgrade your computer. You are probably behind a firewall.
Some firewalls actually block out streaming content.
To open up your firewall to accept streaming content, refer your network administrator to the Firewalls page on the Real Networks FAQ index. The Real Player will try several ways to connect to the Internet, even when behind a firewall. You should have a minimum configuration of a 28.8kbs modem and a Pentium 100 Personal Computer to view this webcast. RealPlayer uses varying configurations depending upon the firewall setup. Go to RealPlayer for more information.