I've built http://www.jantinehos.nl/ on the thematic system, adapting the monochromatic child theme to my own use. Problem: the menu is showing up at the bottom in IE6. Paradoxically it's showing up fine in IE5.5. It's clearly a problem with the floats. I've already tried adding display: inline to all the floats I could find.
I could probably fix this if I could add a specific IE6 stylesheet in thematic, using conditional comments to make sure only IE6 sees it, but I can't find out how to do that (probably need to use the functions file, but HOW).
Any other suggestions on how to fix this are also welcome.