Toontown won't load? :( HELP!!!?

A while back Toontown was installed to Internet Explorer on this computer. But I tried to go on it again today and it didn't work. I went on the site, clicked Play Now, logged in, and it went straight to the 'you need to install it' page for less than a second then reloaded and froze. How can I play Toontown on this computer? It's a Dell PC..Thanks!