The bigger problem than not designing to allow for IE6 users is ensuring yours site still appears the same way for them as intended.
As I have discovered this morning upon my personal site, any element with the attribute
position:fixed may not appear where positioned, and other elements will be pushed around accordingly. Not pretty, and not what I want at all!
IF IE6 comments will be required within the CSS to allow for those users. Should I go this far? I suspect so, as my main viewers have no choice with their browser choice due to their workplace IT-department not wanting to update the default browser.