Hello there. I've tried the Internet Explorer 6 script and have had a curious result.
Once installed in an account containing a .PlayOnLinux directory (it already contains other programs), when you try to run IE6 you get a window complaining about missing Gecko support. After downloading and installing it, all you get is a blank window (title "Wine Internet Explorer" and upper left corner icon "cup of wine").
Then I tried the same in a fresh account and IE6 runs seamlessly with ever asking about Gecko support.
I'm running POL 3.0.3 under Debian Lenny, KDE 3.5.9, Xorg 7.3 and Wine 1.0RC2.