Not to make us as a group sound elitist, but if internet explorer is being that much of a cock, just refuse to support it. Put a little banner at the top showing the IE icon with a slash through it. I think it's fair to suggest most demosceners are tech-savy individuals, and would therefore be running a better browser like firefox, opera, chrome ect. Those of us at work are just going to be viewing the forum, not the front page (as I think restrictions on downloading/runing demos are probably commonplace at most jobs).
Start a trend, and make it look like a choice, instead of laziness. You may get a following of hard-core uber-nerds like myself, who gouge out our caps lock keys for efficiency