Hi noxy,
Thanks four your reply. I've just tested your MOTD in IE6 and it
does not work. Sorry
But even if you apply the TwinHelix fix correctly, it won't help you in TF2. The embedded IE engine has all scripting features turned off. That means that .htc files, which are basicly JavaScript, will be ignored. The same goes for every other scripting based fix out there.
The solution to this problem is
PNG8. So all you need is Fireworks and you can create your graphics so that everybody will correctly see the transparent background.
I hope this helps you.
PS: I think the problem in your current MOTD is that you have to apply the behavior to the img, not the surrounding div. So you just have to put this into your styles section:
#content img { behavior: url(iepngfix.htc); }