I was able to log-in through the site map, but there's usually a log-in at the top of the webpage (in the right hand corner) that isn't being shown to me. After logging in, the right hand corner should show your avatar and other information, but mine doesn't display any of it. You can customize your avatar, but I'm not able to do so because the game requires "Flash" like the games. I'm also still unable to load the movies and episodes the site offers, even on ones I've viewed previously. I based my beliefs that this is a Flash issue on the site's feedback errors, and my inability to play other Flash games on other sites.
To eliminate IE7 as the cause of the problem, please try another browser. I would suggest Firefox since I use it myself. You can get it from here: http://www.mozilla.org/en-US/firefox/fx/
After you install Firefox, download the Flash player for Firefox from here: Download Flash Player Save the file to somewhere you can find it easily and then double click it to install.
Then go Pokeman or newsgrounds.com and see if makes any difference.
If it works, but you don't like the Firefox layout, either send me a private message, or post here and I'll explain how to make it look like Internet Explorer.