If you're using Internet Explorer 5.5 or lower, you're on thin ice. Not just because we don't support it, but it's unsecure, outdated and crappy.
Go grab yourself a copy of Mozilla Firefox 2, which is a compact, secure and the most compatible browser around respecting the W3C standards.
The Halo Hump Creator should look great in IE6+ and Firefox 2, if this is not the case with you, please send us feedback providing details of your browser (screenshot would be appreciated too). These pages haven't been tested (yet) in Opera or Safari.